- allen_cahn_ode, a MATLAB code which sets up and solves the 1D Allen-Cahn reaction-diffusion ordinary differential equation (ODE).
- allen_cahn_ode_test
- alpert_rule, a MATLAB code which can set up an Alpert quadrature rule for functions which are regular, log(x) singular, or 1/sqrt(x) singular.
- alpert_rule_test
- analemma, a MATLAB code which evaluates the equation of time, a formula for the difference between the uniform 24 hour day and the actual position of the sun, based on a C program by Brian Tung.
- analemma_test
- annulus_monte_carlo, a MATLAB code which uses the Monte Carlo method to estimate the integral of a function over the interior of a circular annulus in 2D.
- annulus_monte_carlo_test
- annulus_rule, a MATLAB code which computes a quadrature rule for estimating integrals of a function over the interior of a circular annulus in 2D.
- annulus_rule_test
- approx_bernstein, a MATLAB code which interactively approximates a function f(x) in the interval [a,b] by constructing a Bernstein polynomial.
- approx_bernstein_test
- approx_chebyshev, a MATLAB code which interactively approximates a function f(x) in the interval [a,b] by constructing a Chebyshev polynomial interpolant that is often a good estimate of the minmax polynomial.
- approx_chebyshev_test
- approx_leastsquares, a MATLAB code which interactively approximates a function f(x) in the interval [a,b] by constructing an m-degree polynomial which minimizes the square root of the sum of the squares of the error with n sample data points.
- approx_leastsquares_test
- area_under_curve, a function which displays the area under a curve, that is, the points (x,y) between the x axis and the curve y=f(x).
- area_under_curve_test
- arenstorf_ode, a MATLAB code which describes an ordinary differential equation (ODE) which defines a stable periodic orbit of a spacecraft around the Earth and the Moon.
- arenstorf_ode_test
- args, a function which shows how to count and report command line arguments;
- args_test
- arpack_test
- asa005, a MATLAB code which evaluates the lower tail of the noncentral Student T distribution, by BE Cooper. This is a version of Applied Statistics Algorithm 5;
- asa005_test
- asa006, a MATLAB code which computes the Cholesky factor of a positive definite symmetric matrix, by Michael Healy; This is a version of Applied Statistics Algorithm 6;
- asa006_test
- asa007, a MATLAB code which computes the inverse of a positive definite symmetric matrix, by Michael Healy; This is a version of Applied Statistics Algorithm 7.
- asa007_test
- asa032, a MATLAB code which evaluates the incomplete Gamma function, by G Bhattacharjee. This is a version of Applied Statistics Algorithm 32;
- asa032_test
- asa047, a MATLAB code which minimizes a scalar function of several variables using the Nelder-Mead algorithm, by R ONeill. This is a version of Applied Statistics Algorithm 47;
- asa047_test
- asa053, a MATLAB code which produces sample matrices from the Wishart distribution, by William Smith and Ronald Hocking. This is a version of Applied Statistics Algorithm 53.
- asa053_test
- asa058, a MATLAB code which carries out clustering of data, by David Sparks. This is a version of Applied Statistics Algorithm 58;
- asa058_test
- asa063, a MATLAB code which evaluates the incomplete Beta function, by KL Majumder and G Bhattacharjee. This is a version of Applied Statistics Algorithm 63;
- asa063_test
- asa066, a MATLAB code which computes the cumulative density function (CDF) of the standard normal distribution, by David Hill. This is a version of Applied Statistics Algorithm 66;
- asa066_test
- asa076, a MATLAB code which evaluates the Owen T function, by Young and Minder. This is a version of Applied Statistics Algorithm 76;
- asa076_test
- asa082, a MATLAB code which computes the determinant of an orthogonal matrix; this is Applied Statistics Algorithm 82, by J C Gower.
- asa082_test
- asa091, a MATLAB code which computes the percentage points of the Chi-square distribution, by Best and Roberts. This is a version of Applied Statistics Algorithm 91;
- asa091_test
- asa103, a MATLAB code which evaluates the digamma or psi function, by Jose Bernardo. This is a version of Applied Statistics Algorithm 103;
- asa103_test
- asa109 a MATLAB code which inverts the incomplete Beta function, by Cran, Martin and Thomas. This is a version of Applied Statistics Algorithm 109;
- asa109_test
- asa111 a MATLAB code which evaluates the percentage points of the normal distribution, by Beasley and Springer. This is a version of Applied Statistics Algorithm 111;
- asa111_test
- asa113 a MATLAB code which clusters data using a transfer and swap algorithm, by Banfield and Bassill; This is a version of Applied Statistics Algorithm 113;
- asa113_test
- asa121, a MATLAB code which evaluates the trigamma function, by BE Schneider. This is a version of Applied Statistics Algorithm 121;
- asa121_test
- asa136, a MATLAB code which implements a clustering algorithm, by Hartigan and Wong. This is a version of Applied Statistics Algorithm 136;
- asa136_test
- asa144, a MATLAB code which randomly generates tables with given row and column sums, by James Boyett. This is a version of Applied Statistics Algorithm 144;
- asa144_test
- asa147, a MATLAB code which evaluates the incomplete Gamma function, by Chi Leung Lau. This is a version of Applied Statistics Algorithm 147;
- asa147_test
- asa152, a MATLAB code which evaluates the probability density function (PDF) and cumulative density function (CDF) associated with the hypergeometric distribution, by Richard Lund; This is a version of Applied Statistics Algorithm 152;
- asa152_test
- asa159, a MATLAB code which computes a random table with given row and column sums, by Michael Patefield; This is a version of Applied Statistics Algorithm 159;
- asa159_test
- asa172, a MATLAB code which generates all M dimensional indices in a given range, simulating the behavior of an arbitrary number of nested loops, by OFlaherty and MacKenzie; this is a version of Applied Statistics Algorithm 172;
- asa172_test
- asa183, a MATLAB code which implements a random number generator (RNG), by Wichman and Hill; this is a version of Applied Statistics Algorithm 183;
- asa183_test
- asa226, a MATLAB code which evaluates the noncentral incomplete Beta function, by Russell Lenth; this is a version of Applied Statistics Algorithm 226;
- asa226_test
- asa239, a MATLAB code which evaluates the incomplete Gamma function, by Shea; this is a version of Applied Statistics Algorithm 239;
- asa239_test
- asa241, a MATLAB code which computes the inverse of the normal cumulative density function (CDF), by Michael Wichura; this is a version of Applied Statistics Algorithm 241;
- asa241_test
- asa243, a MATLAB code which evaluates the lower tail of the noncentral Student T distribution, by Russell Lenth; this is a version of Applied Statistics Algorithm 243;
- asa243_test
- asa245, a MATLAB code which evaluates the logarithm of the Gamma function, by Allan Mcleod; this is a version of Applied Statistics Algorithm 245;
- asa245_test
- asa266, a MATLAB code which evaluates various properties of the Dirichlet probability density function (PDF); this is a version of Applied Statistics Algorithm 266;
- asa266_test
- asa299, a MATLAB code which computes the lattice points (integer coordinates) in an M dimensional simplex, by Chasalow and Brand; this is a version of Applied Statistics Algorithm 299;
- asa299_test
- asa310, a MATLAB code which evaluates the noncentral incomplete Beta function, by Chattamvelli and Shanmugam. This is a version of Applied Statistics Algorithm 310;
- asa310_test
- asa314, a MATLAB code which computes the inverse of a matrix whose elements are subject to modulo arithmetic, by Roger Payne. This is a version of Applied Statistics Algorithm 314.
- asa314_test
- atbash, a MATLAB code which applies the Atbash substitution cipher to a string of text.
- atbash_test
- atkinson, a MATLAB code which contains examples from the text "Elementary Numerical Analysis", by Atkinson.
- atkinson_test
- backtrack_binary_rc, a MATLAB code which carries out a backtrack search for a set of binary decisions, using reverse communication (RC).
- backtrack_binary_rc_test
- ball_and_stick_display, a MATLAB code which demonstrates the creation of a 3D image constructed from balls and sticks;
- ball_and_stick_display_test
- ball_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected from the interior of the unit ball in 3D.
- ball_distance_test
- ball_grid, a MATLAB code which computes a grid of points over the interior of the unit ball in 3D.
- ball_grid_test
- ball_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the interior of the unit ball in 3D.
- ball_integrals_test
- ball_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate integrals of a function over the interior of the unit ball in 3D;
- ball_monte_carlo_test
- bank, a MATLAB code which computes the check digit associated with a US Bank Routing Number check digit, or reports whether a 9-digit code is actually valid.
- bank_test
- barycentric_interp_1d, a MATLAB code which defines and evaluates the barycentric Lagrange polynomial p(x) which interpolates a set of data, so that p(x(i)) = y(i). The barycentric approach means that very high degree polynomials can safely be used.
- barycentric_interp_1d_test
- bellman_ford, a MATLAB code which implements the Bellman-Ford algorithm for finding the shortest distance from a given node to all other nodes in a directed graph whose edges have been assigned real-valued lengths.
- bellman_ford_test
- bernstein_approximation, a MATLAB code which looks at some simple cases of approximation of a function f(x) by a Bernstein polynomial.
- bernstein_approximation_test
- bernstein_polynomial, a MATLAB code which evaluates the Bernstein polynomials;
- bernstein_polynomial_test
- besselj, a MATLAB code which evaluates Bessel J functions of noninteger order;
- besselj_test
- besselzero, a MATLAB code which computes the zeros of Bessel functions j or y, by Greg van Winckel and Jason Nicholson.
- besselzero_test
- beta_nc, a MATLAB code which evaluates the cumulative density function (CDF) of the noncentral Beta distribution;
- beta_nc_test
- bezier_surface, a MATLAB code which reads, writes, prints and manipulates the data that defines a Bezier surface;
- bezier_surface_test
- bezier_surface_display, a MATLAB code which displays a Bezier surface;
- bezier_surface_display_test
- bicg, a MATLAB code which implements the biconjugate gradient method (BICG), which estimates the solution of a large sparse nonsymmetric linear system.
- bicg_test
- bicycle_lock, a MATLAB code which simulates the process of determining the secret combination of a bicycle lock, an integer between 000 and 999.
- bicycle_lock_test
- biochemical_linear_ode, a MATLAB code which defines a linear biochemical ordinary differential equation (ODE).
- biochemical_linear_ode_test
- biochemical_nonlinear_ode, a MATLAB code which defines a nonlinear biochemical ordinary differential equation (ODE).
- biochemical_nonlinear_ode_test
- bisection_integer, a MATLAB code which seeks an integer solution to the equation F(X)=0, using bisection within a user-supplied change of sign interval [a,b].
- bisection_integer_test
- bisection_rc, a MATLAB code which seeks a solution to the equation F(X)=0 using bisection within a user-supplied change of sign interval [a,b]. The procedure is written using reverse communication (RC).
- bisection_rc_test
- black_scholes, a MATLAB code which implements some simple approaches to the Black-Scholes option valuation theory, by Desmond Higham.
- black_scholes_test
- blas0, a MATLAB code which contains auxilliary functions for the Basic Linear Algebra Subprograms (BLAS).
- blas0_test
- blas1_d, a MATLAB code which implements the Level 1 Basic Linear Algebra Subprograms (BLAS), using double precision real arithmetic;
- blas1_d_test
- blas1_z, a MATLAB code which implements the Level 1 Basic Linear Algebra Subprograms (BLAS), using double precision complex arithmetic;
- blas1_z_test
- blas2_d, a MATLAB code which contains the Level 2 Basic Linear Algebra Subprograms (BLAS) for matrix-vector operations, using double precision real arithmetic.
- blas2_d_test
- blas3_d, a MATLAB code which constitutes the Level 3 Basic Linear Algebra Subprograms (BLAS), for matrix-matrix operations using double precision real arithmetic.
- blas3_d_test
- blend, a MATLAB code which carries out 1D/2D/3D blending interpolation;
- blend_test
- blsprice_test
- boundary_locus, a MATLAB code which uses the boundary locus method to display the region of absolute stability for a solver of ordinary differential equations (ODE).
- boundary_locus_test
- boundary_locus2, a MATLAB code which uses the boundary locus method to display the region of absolute stability for a solver of ordinary differential equations (ODE), based on a procedure by Randall Leveque.
- boundary_locus2_test
- boundary_word, a MATLAB code which works with a polyomino that is described by its boundary word, a sequence of U/D/L/R symbols that indicate how to trace out its boundary.
- boundary_word_test
- box_behnken, a MATLAB code which computes a Box-Behnken design, that is, a set of arguments to sample the behavior of a function of multiple parameters;
- box_behnken_test
- box_display, a MATLAB code which displays a box plot, over integer pairs of data, of a function defined by two formulas.
- box_display_test
- box_flow, a MATLAB code which solves the Navier Stokes equations (NSE), replacing the continuity equation with a pressure Poisson equation (PPE), by John Cornthwaite.
- box_flow_test
- box_games, a MATLAB code which assists in the display of game boards (checkers, cellular automatons, life);
- box_games_test
- box_plot, a MATLAB code which displays a box plot of data that consists of pairs of integers;
- box_plot_test
- brain_sensor_pod, a MATLAB code which applies the method of Proper Orthogonal Decomposition (POD) to seek underlying patterns in sets of 40 sensor readings of brain activity.
- brain_sensor_pod_test
- brent, a MATLAB code which contains routines for finding zeroes or minima of a scalar function of a scalar variable, without the use of derivative information, including a reverse communication (RC) option, by Richard Brent.
- brent_test
- brownian_motion_simulation, a MATLAB code which simulates Brownian motion in an M dimensional region.
- brownian_motion_simulation_test
- brusselator_ode, a MATLAB code which defines the Brusselator ordinary differential equation (ODE) system.
- brusselator_ode_test
- buckling_spring, a MATLAB code which plots solutions of the buckling spring equations.
- buckling_spring_test
- burgers_solution, a MATLAB code which evaluates exact solutions of the time-dependent 1D viscous Burgers equation.
- burgers_solution_test
- burgers_steady_viscous, a MATLAB code which solves the steady (time-independent) viscous Burgers equation using the finite difference method (FDM) applied to the conservative form of the equation, using the Newton method to solve the resulting nonlinear system.
- burgers_steady_viscous_test
- burgers_time_inviscid, a MATLAB code which solves the time-dependent inviscid Burgers equation using the finite difference method (FDM), and one of six solution methods selected by the user.
- burgers_time_inviscid_test
- burgers_time_viscous, a MATLAB code which solves the time-dependent viscous Burgers equation using the finite difference method (FDM) applied to the conservative form of the equation.
- burgers_time_viscous_test
- bvec, a MATLAB code which demonstrates how signed integers can be stored as binary vectors, and arithmetic can be performed on them.
- bvec_test
- bvp_fd_test, a MATLAB code which demonstrates the use of the finite element method to solve a boundary value problem (BVP).
- bvp4c_test
- bvp_shooting_test, a MATLAB code which demonstrates the use of the shooting method to solve a boundary value problem (BVP).
- bvp4c_test
- c8lib, a MATLAB code which implements certain elementary functions for double precision complex ("C8") variables;
- c8lib_test
- caesar, a MATLAB code which can apply a Caesar Shift Cipher to a string of text.
- caesar_test
- calendar_nyt, a MATLAB code which shows the correspondence between dates and the New York Times volume and issue number;
- calendar_nyt_test
- calpak, a MATLAB code which makes various calendar calculations;
- calpak_test
- cauchy_principal_value, a MATLAB code which uses Gauss-Legendre quadrature to estimate the Cauchy Principal Value (CPV) of certain singular integrals.
- cauchy_principal_value_test
- cavity_flow_display, a MATLAB code which displays a single velocity field solution for the driven cavity;
- cavity_flow_display_test
- cavity_flow_movie, a MATLAB code which animates the velocity solutions for the driven cavity;
- cc_display, a MATLAB code which displays the points used in a 2D Clenshaw-Curtis quadrature rule;
- cc_display_test
- cc_project, a MATLAB code which investigates generalized Clenshaw-Curtis quadrature rules for semi-infinite and infinite intervals, by John Boyd.
- cc_project_test
- ccl_test, a MATLAB code which estimates the Lebesgue constants for sets of points in [-1,+1] computed in several ways. The program is probably of limited interest except as an example of an application of the lebesgue_constant() function.
- ccn_rule, a MATLAB code which defines a Clenshaw Curtis Nested (CCN) quadrature rule.
- ccn_rule_test
- ccs_io a MATLAB code which reads and writes sparse linear systems stored in the Compressed Column Storage (CCS) format.
- ccs_io_test
- ccs_to_st a MATLAB code which converts a sparse matrix from Compressed Column Storage (CCS) to sparse triplet (ST) format.
- ccs_to_st_test
- ccvt_reflect, a MATLAB code which calculates a Constrained Centroidal Voronoi Tessellation (CCVT) for points constrained to lie in a box, with some points pushed towards the boundary;
- ccn_reflect_test
- cell, a MATLAB code which defines a cell array, a generalization of an array which can compactly store and retrieve vector or matrix data of varying size, such as the rows of a triangular matrix.
- cell_test
- cellular_automaton, a MATLAB code which demonstrates the 1D Cellular Automaton known as rule #30.
- cellular_automaton_test
- cg, a MATLAB code which implements a simple version of the conjugate gradient (CG) method for solving a system of linear equations of the form A*x=b, suitable for situations in which the matrix A is symmetric positive definite (SPD).
- cg_test
- cg_lab_triangles, a collection of programs associated with a computer lab assignment on computational geometry and triangles;
- cg_rc, a MATLAB code which implements the conjugate gradient (CG) method for solving a symmetric positive definite (SPD) sparse linear system A*x=b, using reverse communication (RC).
- cg_rc_test
- cg_squared, a MATLAB code which implements the conjugate gradient squared (CGS) method for solving a nonsymmetric sparse linear system A*x=b.
- cg_squared_test
- cgne, a MATLAB code which implements the conjugate gradient method (CG) for the normal equations, where the matrix A is not symmetric positive definite (SPD). In this case, it is attempted to set up and solve the normal equations A'*A*x=A'*b.
- cgne_test
- chain_letter_tree, a MATLAB code which analyzes a similarity matrix for 11 versions of a single chain letter and produces a dendrogram or tree diagram that suggests the degrees of relatedness and the evolutionary history of the letters.
- change_making, a MATLAB code which considers the change making problem, in which a given sum is to be formed using coins of various denominations.
- change_making_test
- chebyshev, a MATLAB code which computes the Chebyshev interpolant/approximant to a given function over an interval.
- chebyshev_test
- chebyshev_interp_1d, a MATLAB code which determines the combination of Chebyshev polynomials which interpolates a set of data, so that p(x(i)) = y(i).
- chebyshev_interp_1d_test
- chebyshev_polynomial, a MATLAB code which considers the Chebyshev polynomials T(i,x), U(i,x), V(i,x) and W(i,x).
- chebyshev_polynomial_test
- chebyshev_series, a MATLAB code which can evaluate a Chebyshev series approximating a function f(x), while efficiently computing one, two or three derivatives of the series, which approximate f'(x), f''(x), and f'''(x), by Manfred Zimmer.
- chebyshev_series_test
- chebyshev1_exactness, a MATLAB code which tests the polynomial exactness of Gauss-Chebyshev type 1 quadrature rules.
- chebyshev1_exactness_test
- chebyshev1_rule, a MATLAB code which computes and writes out a Gauss-Chebyshev type 1 quadrature rule of given order.
- chebyshev1_rule_test
- chebyshev2_exactness, a MATLAB code which tests the polynomial exactness of Gauss-Chebyshev type 2 quadrature rules.
- chebyshev2_exactness_test
- chebyshev2_rule, a MATLAB code which computes and writes out a Gauss-Chebyshev type 2 quadrature rule of given order.
- chebyshev2_rule_test
- cheney_kincaid, a MATLAB code which contains examples from the text "Numerical Mathematics and Computing", by Cheney and Kincaid.
- chrpak, a MATLAB code which manipulates characters and strings;
- chrpak_test
- chuckaluck_simulation, a MATLAB code which simulates the Chuck-a-Luck gambling game.
- chuckaluck_simulation_test
- circle_arc_grid, a MATLAB code which computes grid points along a circular arc.
- circle_arc_grid_test
- circle_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected on the circumference of the unit circle in 2D.
- circle_distance_test
- circle_grid_display a MATLAB code which reads a matrix of integers, and draws a corresponding grid of circles filled with color.
- circle_grid_display_test
- circle_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the circumference of the unit circle in 2D.
- circle_integrals_test
- circle_map, a MATLAB code which illustrates how a matrix maps points on the unit circle to an ellipse.
- circle_map_test
- circle_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate the integral of a function along the circumference of the unit circle in 2D;
- circle_monte_carlo_test
- circle_rule, a MATLAB code which computes quadrature rules for the unit circle in 2D, that is, the circumference of the circle of radius 1 and center (0,0).
- circle_rule_test
- circle_segment, a MATLAB code which carries out computations associated with a circle segment, including height, angle, area, centroid, sampling, and quadrature.
- circle_segment_test
- circles, a MATLAB code which can be used, when creating graphics, to draw one or more circles, while controlling the center locations, radii, colors, edge colors, and transparency, by Chad Greene.
- circles_test
- cities, a MATLAB code which works with city-to-city distance matrices;
- cities_test
- clausen, a MATLAB code which evaluates a Chebyshev interpolant to the Clausen function Cl2(x).
- clausen_test
- clenshaw_curtis_rule, a MATLAB code which implements a Clenshaw Curtis quadrature rule;
- clenshaw_curtis_rule_test
- cnoise, a MATLAB code which generates samples of noise obeying a 1/f^alpha power law, by Miroslav Stoyanov.
- cnoise_test
- cobweb_plot, a MATLAB code which displays a cobweb plot illustrating the process of function iteration.
- cobweb_plot_test
- coin_simulation, a MATLAB code which looks at ways of simulating or visualizing the results of many tosses of a fair or biased coin.
- coin_simulation_test
- collatz, a MATLAB code which computes and analyzes the Collatz sequence, also known as the hailstone sequence or 3n+1 sequence;
- collatz_test
- collatz_recursive, a MATLAB code which demonstrates recursive programming by considering the simple Collatz 3n+1 problem.
- collatz_recursive_test
- collocation, a MATLAB code which demonstrates the use of collocation to produce a function g(x) that satisfies the same constraints as a function f(x), but only at a discrete set of points.
- collocation_test
- colored_noise, a MATLAB code which generates samples of noise obeying a 1/f^alpha power law.
- colored_noise_test
- combination_lock, a MATLAB code which simulates the process of determining the secret combination of a lock.
- combination_lock_test
- combo, a MATLAB code which includes routines for ranking, unranking, enumerating and randomly selecting balanced sequences, cycles, graphs, Gray codes, subsets, partitions, permutations, restricted growth functions, Pruefer codes and trees.
- combo_test
- compass_search, a MATLAB code which seeks the minimizer of a scalar function of several variables using compass search, a direct search algorithm that does not use derivatives.
- compass_search_test
- complex_numbers_test
- complexity_test
- condition, a MATLAB code which implements methods of computing or estimating the condition number of a matrix.
- condition_test
- conte_deboor, a MATLAB code which contains examples from Conte and deBoor's Elementary Numerical Analysis text.
- conte_deboor_test
- continuation, a MATLAB code which implements the continuation method for a simple 2D problem.
- continuation_test
- continued_fraction a MATLAB code which implements some simple algorithms for dealing with simple and generalized continued fractions.
- continued_fraction_test
- contour_gradient, a MATLAB code which displays contours and gradient vectors for a function f(x,y).
- contour_gradient_test
- contour_gradient_3d, a MATLAB code which displays contours and gradient vectors for a function f(x,y) in a 3D display.
- contour_gradient_3d_test
- contour_sequence4, a MATLAB code which creates images suitable for animation from one XY file and a sequence of u(x,y) data files;
- contour_sequence4_test
- convex_hull, a MATLAB code which demonstrates the computation of the convex hull of a set of 2D points.
- convex_hull_test
- coordinate_search, a MATLAB code which seeks the minimizer of a scalar function of several variables, by Jeff Borggaard.
- coordinate_search_test
- cordic, a MATLAB code which computes a few special functions using the CORDIC algorithm.
- cordic_test
- correlation, a MATLAB code which contains statistical correlation functions.
- correlation_test
- cosine_transform, a MATLAB code which demonstrates some simple properties of the discrete cosine transform (DCT).
- cosine_transform_test
- counterfeit_detection, a MATLAB code which considers problems in which one or more counterfeit coins are to be identified by the fact that they do not have the standard weight.
- counterfeit_detection_test
- cplex_solution_read, a MATLAB code which extracts solution data from a CPLEX result file.
- cplex_solution_read_test
- cube_arbq_rule, a MATLAB code which returns quadrature rules, with exactness up to total degree 15, over the interior of the symmetric cube in 3D, by Hong Xiao and Zydrunas Gimbutas.
- cube_arbq_rule_test
- cube_display, a MATLAB code which displays a cube plot, over integer triples of data, of a function defined by two formulas, using plotcube.m, by Thomas Montagnon.
- cube_display_test
- cube_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected in the interior of the unit cube in 3D.
- cube_distance_test
- cube_exactness, a MATLAB code which investigates the polynomial exactness of quadrature rules over the interior of a cube in 3D.
- cube_exactness_test
- cube_felippa_rule, a MATLAB code which returns a Felippa quadrature rules for approximating integrals over the interior of a cube in 3D.
- cube_felippa_rule_test
- cube_grid, a MATLAB code which computes a grid of points over the interior of a cube in 3D.
- cube_grid_test
- cube_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the interior of the unit cube in 3D.
- cube_integrals_test
- cube_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate the integral of a function over the interior of the unit cube in 3D.
- cube_monte_carlo_test
- cuda_loop, a MATLAB code which shows how, in a CUDA program, the choice of block and thread factors determines the allocation of tasks to processors.
- cuda_loop_test
- cvt, a MATLAB code which computes an N-point Centroidal Voronoi Tessellation (CVT) in M dimensions;
- cvt_test
- cvt_1d_lloyd, a MATLAB code which computes an N-point Centroidal Voronoi Tessellation (CVT) within the interval [0,1], under a uniform density, using the Lloyd method to compute the Voronoi regions exactly.
- cvt_1d_lloyd_test
- cvt_1d_lumping, a MATLAB code which allows the user to carry out a lumped version of the Lloyd iterative algorithm for a centroidal Voronoi Tessellation (CVT() in the interval [-1,+1], and is applied to investigate a relationship between a CVT and the Chebyshev Zero nodes.
- cvt_1d_lumping_test
- cvt_1d_nonuniform, a MATLAB code which computes an N-point Centroidal Voronoi Tessellation (CVT) in 1 dimension, under a nonuniform density, and plots the evolution of the locations of the generators during the iteration;
- cvt_1d_nonuniform_test
- cvt_1d_sampling, a MATLAB code which computes an N-point Centroidal Voronoi Tessellation (CVT) within the interval [0,1], under a uniform density, using sampling to estimate the Voronoi regions.
- cvt_1d_sampling_test
- cvt_2d_lumping, a MATLAB code which computes an N-point Centroidal Voronoi Tessellation (CVT) within the unit square [-1,1]^2, under a Chebyshev density, using weighted sampling ("lumping") to estimate the Voronoi regions.
- cvt_2d_lumping_test
- cvt_2d_sampling, a MATLAB code which computes an N-point Centroidal Voronoi Tessellation (CVT) within the unit square [0,1]x[0,1], under a uniform density, using sampling to estimate the Voronoi regions.
- cvt_2d_sampling_test
- cvt_3d_lumping, a MATLAB code which computes an N-point Centroidal Voronoi Tessellation (CVT) within the unit cube [-1,1]^3, under a Chebyshev density, using weighted sampling ("lumping") to estimate the Voronoi regions.
- cvt_3d_lumping_test
- cvt_3d_sampling, a MATLAB code which computes an N-point Centroidal Voronoi Tessellation (CVT) within the unit cube [0,1]x[0,1]x[0,1], under a uniform density, using sampling to estimate the Voronoi regions.
- cvt_3d_sampling_test
- cvt_box, a MATLAB code which calculates a Centroidal Voronoi Tessellation (CVT) for points constrained to lie in a box, with some points moved to the boundary;
- cvt_box_test
- cvt_circle_nonuniform, a MATLAB code which demonstrates the computation of a centroidal Voronoi Tessellation (CVT) over a circular region, using a nonuniform density.
- cvt_circle_nonuniform_test
- cvt_circle_uniform, a MATLAB code which demonstrates the computation of a centroidal Voronoi Tessellation (CVT) over a circular region, using a uniform density.
- cvt_circle_uniform_test
- cvt_corn, a MATLAB code which studies a 2D model of the growth of a corn kernel, by treating the surface and interior biological cells as points to be organized by a Centroidal Voronoi Tessellation (CVT) with a nonuniform density; during a sequence of growth steps, new biological cells are randomly added to the surface and interior.
- cvt_ellipse_uniform, a MATLAB code which iteratively calculates a Centroidal Voronoi Tessellation (CVT) over an ellipse, with a uniform density.
- cvt_ellipse_uniform_test
- cvt_example_fifty_points, a MATLAB code which illustrates the steps involved in the calculation of a Centroidal Voronoi Tessellation (CVT) of the unit square, with 50 generator points.
- cvt_example_five_points, a MATLAB code which illustrates the steps involved in the calculation of a Centroidal Voronoi Tessellation (CVT) of the unit square, with 5 generator points.
- cvt_metric, a MATLAB code which computes a Centroidal Voronoi Tessellation (CVT) under a spatially varying metric;
- cvt_metric_test
- cvt_movie, a MATLAB code which creates an animation of the evolution of a Centroidal Voronoi Tessellation (CVT);
- cvt_movie2, a MATLAB code which creates a Centroidal Voronoi Tessellation (CVT) movie;
- cvt_movie3, a MATLAB code which creates a Centroidal Voronoi Tessellation (CVT) movie in a region of unusual shape;
- cvt_movie4, a MATLAB code which creates a Centroidal Voronoi Tessellation (CVT) movie in a square, with a density function that drives points to the corners;
- cvt_movie5, a MATLAB code which repeats cvt_movie3, but with hexagonal grid initialization, fixed points, and boundary projection;
- cvt_square_nonuniform, a MATLAB code which iteratively calculates a Centroidal Voronoi Tessellation (CVT) over a square, with a nonuniform density.
- cvt_square_nonuniform_test
- cvt_square_pdf_discrete, a MATLAB code which iteratively calculates a Centroidal Voronoi Tessellation (CVT) over a square, with a density determined from a discrete PDF.
- cvt_square_pdf_discrete_test
- cvt_square_uniform, a MATLAB code which iteratively calculates a Centroidal Voronoi Tessellation (CVT) over a square, with a uniform density.
- cvt_square_uniform_test
- cvt_triangle_uniform, a MATLAB code which iteratively calculates a Centroidal Voronoi Tessellation (CVT) over a triangle, with a uniform density.
- cvt_triangle_uniform_test
- cvtm_1d, a MATLAB code which estimates a mirror-periodic centroidal Voronoi Tessellation (CVTM) in the periodic interval [0,1], using a version of the Lloyd iteration.
- cvtm_1d_test
- cvtp, a MATLAB code which creates a CVTP dataset, that is, a Centroidal Voronoi Tessellation on a periodic region.
- cvtp_test
- cvtp_1d, a MATLAB code which estimates a periodic centroidal Voronoi Tessellation (CVTP) in the periodic interval [0,1], using a version of the Lloyd iteration.
- cvtp_1d_test
- cycle_brent, a MATLAB code which carries out an iterated function evaluation, and seeks to determine the nearest element of a cycle, and the cycle length, using the Brent method.
- cycle_brent_test
- cycle_floyd, a MATLAB code which carries out an iterated function evaluation, and seeks to determine the nearest element of a cycle, and the cycle length, using the Floyd method.
- cycle_floyd_test
- cyclic_reduction, a MATLAB code which solves a tridiagonal linear system using cyclic reduction;
- cyclic_reduction_test
- dfield9, a MATLAB code which allows a user to interactively specify the right hand side of an ordinary differential equation (ODE). The program then displays the corresponding direction field. If the user clicks on any point in the image as an initial condition, the program displays the corresponding solution curve. The original version of this code was by John Polking.
- dg1d_advection, a MATLAB code which uses the Discontinuous Galerkin Method (DG) to approximate a solution of the advection equation. The original version of the code was written by Jan Hesthaven and Tim Warburton.
- dg1d_advection_test
- dg1d_burgers, a MATLAB code which uses the Discontinuous Galerkin Method (DG) to approximate a solution of the unsteady 1D Burgers equation. The original version of the code was written by Jan Hesthaven and Tim Warburton.
- dg1d_burgers_test
- dg1d_heat, a MATLAB code which uses the Discontinuous Galerkin Method (DG) to approximate a solution of the unsteady 1D heat equation. The original version of the code was written by Jan Hesthaven and Tim Warburton.
- dg1d_heat_test
- dg1d_maxwell, a MATLAB code which uses the Discontinuous Galerkin Method (DG) to approximate a solution of the Maxwell equations. The original version of the code was written by Jan Hesthaven and Tim Warburton.
- dg1d_maxwell_test
- dg1d_poisson, a MATLAB code which applies the discontinuous Galerkin method (DG) to a 1D version of the Poisson equation; the original version of the code was written by Beatrice Riviere.
- dg1d_poisson_test
- diaphony, a MATLAB code which reads a file of N points in M dimensions and computes its diaphony, a measure of point dispersion.
- diaphony_test
- dice_simulation, a MATLAB code which simulates N tosses of M dice, making a histogram of the results.
- dice_simulation_test
- dictionary_code, a MATLAB code which demonstates how a text file can be compressed and decompressed using a dictionary code.
- dictionary_code_test
- diff_test
- diff_center, a MATLAB code which interactively uses centered differences to estimate the derivative of a function f(x), using a stepsize h.
- diff_center_test
- diff_forward, a MATLAB code which interactively uses forward differences to estimate the derivative of a function f(x), using a stepsize h.
- diff_forward_test
- diff2_center, a MATLAB code which interactively uses centered differences to estimate the second derivative of a function f(x), using a stepsize h.
- diff2_center_test
- differ, a MATLAB code which determines the finite difference coefficients necessary in order to combine function values at known locations to compute an approximation of given accuracy to a derivative of a given order.
- differ_test
- digital_dice, a MATLAB code which carries out the probability simulations described in "Digital Dice", by Paul Nahin;
- digital_dice_test
- dijkstra, a MATLAB code which implements a simple version of the Dijkstra minimum distance algorithm for graphs.
- dijkstra_test
- diophantine, a MATLAB code which finds one solution of a diophantine equation in any number of variables.
- diophantine_test
- diophantine_2d, a MATLAB code which solves diophantine equations in two variables, linear equations with integer coefficients, for which only integer solutions are allowed.
- diophantine_2d_test
- diophantine_3d, a MATLAB code which is given a Diophantine equation in 3 variables, and returns all nonnegative solutions, or all strictly positive solutions.
- diophantine_3d_test
- diophantine_4d, a MATLAB code which is given a Diophantine equation in 4 variables, and returns all nonnegative solutions, or all strictly positive solutions.
- diophantine_4d_test
- diophantine_5d, a MATLAB code which is given a Diophantine equation in 5 variables, and returns all nonnegative solutions, or all strictly positive solutions.
- diophantine_5d_test
- diophantine_nd, a MATLAB code which is given a Diophantine equation in N variables, and returns all nonnegative solutions, or all strictly positive solutions.
- diophantine_nd_doc
- diophantine_nd_test
- discrete_pdf_sample_2d, a MATLAB code which demonstrates how to construct a Probability Density Function (PDF) from a table of sample data, and then to use that PDF to create new samples.
- discrete_pdf_sample_2d_test
- disk_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected from the interior of the unit disk in 2D.
- disk_distance_test
- disk_grid, a MATLAB code which computes grid points within the interior of a disk of user specified radius and center in 2D, using gnuplot to create an image of the grid.
- disk_grid_test
- disk_integrands, a MATLAB code which defines several test integrals over the unit disk, making it possible to check the accuracy of quadrature rules.
- disk_integrands_test
- disk_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate integrals of a function over the interior of the general disk in 2D.
- disk_monte_carlo_test
- disk_rule, a MATLAB code which computes quadrature rules for the general disk in 2D.
- disk_rule_test
- disk01_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the interior of the unit disk in 2D.
- disk01_integrals_test
- disk01_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate integrals of a function over the interior of the unit disk in 2D;
- disk01_monte_carlo_test
- disk01_quarter_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate integrals of a function over the interior of the unit quarter disk in 2D;
- disk01_quarter_monte_carlo_test
- disk01_quarter_rule, a MATLAB code which computes a quadrature rule for the unit quarter disk in 2D, that is, the interior of the circle of radius 1 and center (0,0).
- disk01_quarter_rule_test
- disk01_rule, a MATLAB code which computes quadrature rules for the unit disk in 2D.
- disk01_rule_test
- dist_plot, a MATLAB code which makes contour plots of the distance function, as defined and used in Persson and Strang's distmesh() code;
- dist_plot_test
- distance_to_position, a MATLAB code which estimates the positions of cities which minimizes the discrepancy with a city-to-city distance table.
- distance_to_position_test
- distance_to_position_sphere, a MATLAB code which estimates the positions of cities on a sphere (such as the earth) based on a city-to-city distance table.
- distance_to_position_sphere_test
- distmesh, a MATLAB code which carries out a method of mesh generation; by Per-Olof Persson and Gilbert Strang.
- distmesh_test
- distmesh_3d, a MATLAB code which carries out a method of mesh generation in 3D, by Per-Olof Persson and Gilbert Strang.
- distmesh_3d_test
- divdif, a MATLAB code which uses divided differences to compute the polynomial interpolant to a given set of data.
- divdif_test
- dlap_io, a MATLAB code which reads and writes DLAP sparse matrix files;
- dlap_io_test
- doomsday, a MATLAB code which is given the year, month and day of a date, and uses John Conway's doomsday algorithm to determine the corresponding day of the week.
- doomsday_test
- dot_l2, a MATLAB code which interactively estimates the L2 dot product of two functions over an interval [a,b], with the functions entered as a string.
- dot_l2_test
- double_c_data, MATLAB codes which generate, plot or write out 2D data that forms two interlocking "C" shapes.
- double_c_data_test
- double_pendulum_movie, a MATLAB code which solves the double pendulum ordinary differential equation (ODE) for a given set of initial conditions and parameters, and makes a movie of the results.
- double_pendulum_movie_test
- double_pendulum_ode, a MATLAB code which defines the double pendulum ordinary differential equation (ODE).
- double_pendulum_ode_test
- dream, a MATLAB code which implements the DREAM algorithm for accelerating Markov Chain Monte Carlo (MCMC) convergence using differential evolution, using five user functions to define the problem, by Guannan Zhang.
- dream_test
- drug_dosage, a MATLAB code which simulates the variation in the blood levels of a medicinal drug being administered at specific dosages and times over a course of treatment. The level should rise about a given medicinal level for some time, but stay below the toxic level.
- drug_dosage_test
- duel_simulation, a MATLAB code which simulates N repetitions of a duel between two players, each of whom has a known firing accuracy.
- duel_simulation_test
- dueling_idiots, a MATLAB code which carries out the probability simulations described in "Dueling Idiots", by Paul Nahin;
- dueling_idiots_test
- e_spigot, a MATLAB code which produces N digits of the decimal expansion of e.
- e_spigot_test
- earth_sphere, a MATLAB code which can display a 3D image of the earth;
- earth_sphere_test
- edge, a MATLAB code which defines some test functions in 1D, 2D and 3D for the detection of edges or discontinuities.
- edge_test
- eigenfaces, a MATLAB code which applies principal component analysis to a set of images.
- eigenfaces_test
- ellipse_grid, a MATLAB code which computes a grid of points over the interior of an ellipse in 2D.
- ellipse_grid_test
- ellipse_monte_carlo, a MATLAB code which uses the Monte Carlo method to estimate the value of integrals over the interior of an ellipse in 2D.
- ellipse_monte_carlo_test
- ellipsoid_grid, a MATLAB code which computes a grid of points over the interior of an ellipsoid in 3D.
- ellipsoid_grid_test
- ellipsoid_monte_carlo, a MATLAB code which uses the Monte Carlo method to estimate the value of integrals over the interior of an ellipsoid in M dimensions.
- ellipsoid_monte_carlo_test
- elliptic_integral, a MATLAB code which evaluates complete elliptic integrals of first, second and third kind, using the Carlson elliptic integral functions.
- elliptic_integral_test
- epicycloid, a MATLAB code which computes, plots and tabulates an epicycloid curve.
- epicycloid_test
- equidistribution, investigates equidistribution properties relating to density functions and point sets.
- equidistribution_test
- eros, a MATLAB code which implements elementary row operations (EROs) for the interactive solution of a system of linear equations.
- eros_test
- errors, MATLAB codes which illustrate the failure of numerical algorithms;
- errors_test
- etdrk4, a MATLAB code which uses the ETD RK4 method to solve systems of stiff ordinary differential equations (ODE), by Aly-Khan Kassam, Lloyd Trefethen.
- etdrk4_test
- euler, a MATLAB code which solves one or more ordinary differential equations (ODE) using the forward Euler method.
- euler_test
- exactness, a MATLAB code which investigates the exactness of quadrature rules that estimate the integral of a function with a density, such as 1, exp(-x) or exp(-x^2), over an interval such as [-1,+1], [0,+oo) or (-oo,+oo).
- exactness_test
- exm, a MATLAB code which illustrates the computational experiments in "Experiments with Matlab", by Cleve Moler.
- exm_test
- faces_average, a MATLAB code which averages several images of the same face;
- faces_average_test
- fair_dice_simulation, a MATLAB code which simulates N tosses of 2 dice, making a histogram of the results.
- fair_dice_simulation_test
- fastgl, a MATLAB code which carries out the rapid computation of the Kth value and weight of an N point Gauss-Legendre quadrature rule, by Ignace Bogaert.
- fastgl_test
- faure, a MATLAB code which computes the Faure M dimensional Quasi Mont Carlo (QMC) sequence;
- faure_test
- fd_predator_prey, a MATLAB code which solves a time-dependent predator prey system using the finite difference method (FDM).
- fd_predator_prey_test
- fd1d_advection_diffusion_steady, a MATLAB code which applies the finite difference method (FDM) to solve the steady advection diffusion equation v*ux-k*uxx=0 in one spatial dimension, with constant velocity v and diffusivity k.
- fd1d_advection_diffusion_steady_test
- fd1d_advection_ftcs, a MATLAB code which applies the finite difference method (FDM) to solve the time-dependent advection equation ut = - c * ux in one spatial dimension, with a constant velocity, using the forward time centered space (FTCS) difference scheme.
- fd1d_advection_ftcs_test
- fd1d_advection_lax, a MATLAB code which applies the finite difference method (FDM) to solve the time-dependent advection equation ut = - c * ux in one spatial dimension, with a constant velocity, using the Lax method to approximate the time derivative.
- fd1d_advection_lax_test
- fd1d_advection_lax_wendroff, a MATLAB code which applies the finite difference method (FDM) to solve the time-dependent advection equation ut = - c * ux in one spatial dimension, with a constant velocity, using the Lax-Wendroff method to approximate the time derivative.
- fd1d_advection_lax_wendroff_test
- fd1d_burgers_lax, a MATLAB code which applies the finite difference method (FDM) and the Lax Wendroff method to solve the non-viscous time-dependent Burgers equation in one spatial dimension.
- fd1d_burgers_lax_test
- fd1d_burgers_leap, a MATLAB code which applies the finite difference method (FDM) and the leapfrog approach to solve the non-viscous time-dependent Burgers equation in one spatial dimension.
- fd1d_burgers_leap_test
- fd1d_bvp, a MATLAB code which applies the finite difference method (FDM) to a two point boundary value problem (BVP) in one spatial dimension.
- fd1d_bvp_test
- fd1d_display, a MATLAB code which reads a pair of files defining a 1D model for the finite difference method (FDM), and plots the data.
- fd1d_display_test
- fd1d_heat_explicit, a MATLAB code which implements a finite difference method (FDM), explicit in time, to solve the time dependent 1D heat equation;
- fd1d_heat_explicit_test
- fd1d_heat_implicit, a MATLAB code which implements a finite difference method (FDM), implicit in time, to solve the time dependent 1D heat equation;
- fd1d_heat_implicit_test
- fd1d_heat_steady, a MATLAB code which implements a finite difference method (FDM) for the steady (time independent) 1D heat equation;
- fd1d_heat_steady_test
- fd1d_poisson, a MATLAB code which solves a Poisson equation over a user-specified discretized interval, with given functions f(x) (right hand side) and g(x) (Dirichlet boundary conditions), using the Finite Difference Method (FDM).
- fd1d_poisson_test
- fd1d_predator_prey, a MATLAB code which implements a finite difference method (FDM) for a time and 1D space dependent predator-prey system, by Marcus Garvie.
- fd1d_predator_prey_test
- fd1d_predator_prey_plot, a MATLAB code which plots solutions from the fd1d_predator_prey program, by Marcus Garvie.
- fd1d_predator_prey_plot_test
- fd1d_wave, a MATLAB code which applies the finite difference method (FDM) to solve the time-dependent wave equation utt = c * uxx in one spatial dimension.
- fd1d_wave_test
- fd2d_convergence_test
- fd2d_heat_steady, a MATLAB code which implements a finite difference method (FDM) for the steady (time independent) 2D heat equation;
- fd2d_heat_steady_test
- fd2d_poisson, a MATLAB code which solves a Poisson equation over a user-specified discretized rectangle, with given functions f(x,y) (right hand side) and g(x,y) (Dirichlet boundary conditions), using the Finite Difference Method (FDM).
- fd2d_poisson_test
- fd2d_predator_prey, a MATLAB code which implements a finite difference method (FDM) for a time and 2D space dependent predator-prey system, by Marcus Garvie.
- fd2d_predator_prey_test
- fd3d_poisson, a MATLAB code which solves a Poisson equation over a user-specified discretized 3d block, with given functions f(x,y,z) (right hand side) and g(x,y,z) (Dirichlet boundary conditions), using the Finite Difference Method (FDM).
- fd3d_poisson_test
- fe2d_predator_prey_fast, MATLAB codes which implement a finite element method (FEM) for a time and 2D space dependent predator-prey system, on an arbitrary triangulated region, with a variety of possible boundary conditions, incorporating some Matlab optimizations, by Marcus Garvie.
- fe2d_predator_prey_fast_test
- fem_basis, a MATLAB code which can define and evaluate finite element method (FEM) basis functions for any degree in an M dimensional simplex (1D interval, 2D triangle, 3D tetrahedron, and higher dimensional generalizations.)
- fem_basis_test
- fem_basis_q4_display, a MATLAB code which displays any single finite element method (FEM) basis function associated with an arbitrary linear quadrilateral Q4 mesh;
- fem_basis_q4_display_test
- fem_basis_t3_display, a MATLAB code which displays a basis function for the finite element method (FEM) associated with an arbitrary 3-node triangle T3 mesh;
- fem_basis_t3_display_test
- fem_basis_t4_display, a MATLAB code which displays a basis function for the finite element method (FEM) associated with an arbitrary 4-node triangle T4 mesh;
- fem_basis_t6_display, a MATLAB code which displays a basis function for the finite element method (FEM) associated with an arbitrary 6-node triangle T6 mesh;
- fem_io, a MATLAB code which reads or writes FEM files, which describe the nodes, elements, and function values associated with a finite element method (FEM) model;
- fem_io_test
- fem_neumann, a MATLAB code which sets up a time-dependent reaction-diffusion equation in 1D, with Neumann boundary conditions, discretized using the finite element method (FEM).
- fem_neumann_test
- fem_to_gmsh, a MATLAB code which reads a pair of FEM files defining node coordinates and elements, of a 1D, 2D or 3D mesh, namely a file of node coordinates and a file of elements defined by node indices, and creates a Gmsh mesh file.
- fem_to_gmsh_test
- fem_to_mesh, a MATLAB code which reads a set of FEM files defining the node coordinates, boundary nodes, and elements of a finite element mesh, and rewrites the data as a MESH file.
- fem_to_mesh_test
- fem_to_triangle, a MATLAB code which reads FEM files defining a 2D mesh of triangles, namely a file of node coordinates and a file of elements defined by node indices, and creates a corresponding pair of node and element files for use by Jonathan Shewchuk's triangle program.
- fem_to_triangle_test
- fem_to_xml, reads a pair of FEM files defining node coordinates and elements, of a 1D, 2D or 3D mesh, namely a file of node coordinates and a file of elements defined by node indices, and creates a corresponding XML file for input to DOLFIN or FENICS.
- fem_to_xml_test
- fem1d, a MATLAB code which applies the finite element method (FEM), using piecewise linear basis functions, to a linear two point boundary value problem (BVP) in 1D;
- fem1d_test
- fem1d_adaptive, a MATLAB code which uses an adaptive mesh when applying the finite element method (FEM), with piecewise linear basis functions, to a linear two point boundary value problem (BVP) in 1D;
- fem1d_adaptive_test
- fem1d_approximate, a MATLAB code which uses a given finite element mesh and piecewise linear basis functions to approximate a set of data points, while controlling the variation in the derivative.
- fem1d_approximate_test
- fem1d_bvp_linear, a MATLAB code which applies the finite element method (FEM), with piecewise linear elements, to a two point boundary value problem (BVP) in one spatial dimension, and compares the computed and exact solutions with the L2 and seminorm errors.
- fem1d_bvp_linear_test
- fem1d_bvp_quadratic, a MATLAB code which applies the finite element method (FEM), with piecewise quadratic elements, to a two point boundary value problem (BVP) in one spatial dimension, and compares the computed and exact solutions with the L2 and seminorm errors.
- fem1d_bvp_quadratic_test
- fem1d_display, a MATLAB code which reads three files defining a 1D arbitrary degree basis function associated with the finite element method (FEM), and displays a plot.
- fem1d_display_test
- fem1d_function_10_display, a MATLAB code which reads three files defining a 1D piecewise linear finite element method (FEM) function and displays a plot.
- fem1d_display_function_10_test
- fem1d_heat_explicit, a MATLAB code which uses the finite element method (FEM) and explicit time stepping to solve the time dependent heat equation in 1D.
- fem1d_heat_explicit_test
- fem1d_heat_implicit, a MATLAB code which uses the finite element method (FEM) and implicit time stepping to solve the time dependent heat equation in 1D.
- fem1d_heat_implicit_test
- fem1d_heat_steady, a MATLAB code which implements the finite element method (FEM) for the steady (time independent) 1D heat equation;
- fem1d_heat_steady_test
- fem1d_lagrange, a MATLAB code which sets up the matrices and vectors associated with the finite element method (FEM) solution of a boundary value problem (BVP) -u''+u=f(x), using Lagrange basis polynomials.
- fem1d_lagrange_test
- fem1d_nonlinear, a MATLAB code which applies the finite element method (FEM), with piecewise linear basis functions, to a nonlinear two point boundary value problem (BVP) in 1D;
- fem1d_nonlinear_test
- fem1d_pack, a MATLAB code which contains utilities for 1D finite element method (FEM) calculations.
- fem1d_pack_test
- fem1d_pmethod, a MATLAB code which applies the p-method version of the finite element method (FEM) to a linear two point boundary value problem (BVP) in 1D;
- fem1d_pmethod_test
- fem1d_project, a MATLAB code which projects data into a finite element space, including the least squares approximation of data, or the projection of a finite element solution from one mesh to another.
- fem1d_project_test
- fem1d_sample, a MATLAB code which samples a scalar or vector finite element function of one variable, defined by FEM files, returning interpolated values at the sample points.
- fem1d_sample_test
- fem1d_spectral_numeric, a MATLAB code which applies the spectral finite element method (FEM) to solve the problem u'' = - pi^2 sin(x) over [-1,+1] with zero boundary conditions, using as basis elements the functions x^n*(x-1)*(x+1), and carrying out the integration numerically, using the MATLAB quad() function, by Miro Stoyanov.
- fem1d_spectral_numeric_test
- fem1d_spectral_symbolic, a MATLAB code which applies the spectral finite element method (FEM) to solve the problem u'' = - pi^2 sin(x) over [-1,+1] with zero boundary conditions, using as basis elements the functions x^n*(x-1)*(x+1), and carrying out the integration using the MATLAB symbolic toolbox, by Miro Stoyanov.
- fem1d_spectral_symbolic_test
- fem2d_bvp_linear, a MATLAB code which applies the finite element method (FEM), with piecewise bilinear elements, to a 2D boundary value problem (BVP) in a rectangle, and compares the computed and exact solutions with the L2 and seminorm errors.
- fem2d_bvp_linear_test
- fem2d_bvp_quadratic, a MATLAB code which applies the finite element method (FEM), with piecewise quadratic elements, to a 2D boundary value problem (BVP) in a rectangle, and compares the computed and exact solutions with the L2 and seminorm errors.
- fem2d_bvp_quadratic_test
- fem2d_bvp_serene, a MATLAB code which applies the finite element method (FEM), with serendipity elements, to a 2D boundary value problem (BVP) in a rectangle, and compares the computed and exact solutions with the L2 and seminorm errors.
- fem2d_bvp_serene_test
- fem2d_heat, a MATLAB code which applies the finite element method (FEM) to the time dependent heat equation on an arbitrary triangulated region in 2D;
- fem2d_heat_test
- fem2d_heat_rectangle, a MATLAB code which applies the finite element method (FEM) for the time-dependent heat equation on a triangulated square in 2D;
- fem2d_heat_rectangle_test
- fem2d_heat_sparse, a MATLAB code which applies the finite element method (FEM) to the heat equation on an arbitrary triangulated region in 2D, using the MATLAB sparse matrix features;
- fem2d_heat_sparse_test
- fem2d_mesh_display, a MATLAB code which reads a FEM model of a 2D mesh of elements of any uniform order and displays a plot of the elements and nodes, with optional numbering.
- fem2d_mesh_display_test
- fem2d_pack, a MATLAB code which performs simple 2D finite element method (FEM) computations;
- fem2d_pack_test
- fem2d_poisson_rectangle, a MATLAB code which solves the 2D Poisson equation on a rectangle, using the finite element method (FEM), and piecewise quadratic triangular elements.
- fem2d_poisson_rectangle_linear, a MATLAB code which solves the 2D Poisson equation on a rectangle, using the finite element method (FEM), and piecewise linear triangular elements.
- fem2d_project, a MATLAB code which projects a function f(x,y), given as data, into a given finite element space of piecewise linear triangular elements.
- fem2d_project_test
- fem2d_project_function, a MATLAB code which projects a function f(x,y), given as a formula, into a given finite element space of piecewise linear triangular elements.
- fem2d_project_function_test
- fem2d_sample, a MATLAB code which samples a finite element function, defined by FEM files, (three text files describing the nodes, triangles, and coefficients); at arbitrary points.
- fem2d_sample_test
- fem2d_scalar_display, a MATLAB code which reads information about nodes, elements and nodal values for a 2D finite element method (FEM) and creates a surface plot of U(X,Y), using the MATLAB graphics system.
- fem2d_scalar_display_test, a MATLAB code which reads information about nodes, elements and nodal values for a 2D finite element method (FEM) and creates a surface plot of U(X,Y), using the MATLAB graphics system.
- fem2d_scalar_display_brief, a MATLAB code which reads information about nodes, elements and nodal values for a 2D finite element method (FEM) and creates a surface plot of U(X,Y), using the MATLAB graphics system, in 5 lines of code.
- fem2d_scalar_display_brief_test
- fem2d_scalar_display_gpl, a MATLAB code which reads information about nodes, elements and nodal values for a 2D finite element method (FEM) and creates a GPL file describing a surface plot of U(X,Y), which can be displayed by GNUPLOT.
- fem2d_scalar_display_gpl_test,
- fem3d_pack, a MATLAB code which contains utilities for 3D finite element method (FEM) calculations.
- fem3d_pack_test
- fem3d_project, a MATLAB code which projects a function f(x,y,z), given as a data, into a given space of piecewise linear tetrahedral elements for use in the finite element method (FEM).
- fem3d_project_test
- fem3d_sample, a MATLAB code library which evaluates a function defined on a 3D tetrahedral mesh as part of the finite element method (FEM).
- fem3d_sample_test
- fern, a MATLAB code which uses MATLAB graphics to compute and display the Barnsley fractal fern.
- fern_test
- feynman_kac_1d, a MATLAB code which demonstrates the use of the Feynman-Kac algorithm to solve the Poisson equation in a 1D interval by averaging stochastic paths to the boundary.
- feynman_kac_1d_test
- feynman_kac_2d, a MATLAB code which demonstrates the use of the Feynman-Kac algorithm to solve the Poisson equation in a 2D ellipse by averaging stochastic paths to the boundary.
- feynman_kac_2d_test
- feynman_kac_3d, a MATLAB code which demonstrates the use of the Feynman-Kac algorithm to solve the Poisson equation in a 3D ellipsoid by averaging stochastic paths to the boundary.
- feynman_kac_1d_test
- fft_serial, a MATLAB code which computes a Fast Fourier Transform (FFT), and is intended as a starting point for implementing a parallel version.
- fft_serial_test
- fibonacci_spiral, a MATLAB code which displays points on a Fibonacci spiral, suggesting the arrangement of seeds in a sunflower, for instance.
- fibonacci_spiral_test
- file_increment, a MATLAB code which makes a copy of a file containing an integer array, after incrementing each entry by a given value.
- file_increment_test
- file_name_sequence, a MATLAB code which demonstrates ways to generate a sequence of filenames, which can be useful when generating a sequence of still snapshots to be animated later.
- file_name_sequence_test
- files_multiple_test
- filon, a MATLAB code which can approximate integrals in which the integrand includes an oscillatory factor of sin(k*x) or cos(k*x).
- filon_test
- filum, a MATLAB code which handles files and filenames;
- filum_test
- fire_simulation, a MATLAB code which simulates a forest fire over a rectangular array of trees, starting at a single random location.
- fire_simulation_test
- fitnlm_test, a MATLAB code which tests the MATLAB fitnlm() function, which fits a nonlinear regression model.
- flame_ode, a MATLAB code which considers an ordinary differential equation (ODE) which models the growth of a ball of flame in a combustion process.
- flame_ode_test
- florida_cvt_geo, MATLAB codes which explore the creation of a centroidal Voronoi Tessellation (CVT) of the state of Florida, based solely on geometric considerations.
- florida_cvt_geo_test
- florida_cvt_pop, MATLAB codes which explore the creation of a centroidal Voronoi Tessellation (CVT) of the state of Florida, based on population considerations.
- florida_cvt_pop_test
- floyd, a MATLAB code which implements the Floyd algorithm for finding the shortest distance between pairs of nodes on a directed graph.
- floyd_test
- fmincon_test
- fn, a MATLAB code which evaluates elementary and special functions using Chebyshev polynomials; functions include Airy, Bessel I, J, K and Y, beta, confluent hypergeometric, error, gamma, log gamma, Pochhammer, Spence; integrals include hyperbolic cosine, cosine, Dawson, exponential, logarithmic, hyperbolic sine, sine; by Wayne Fullerton.
- fn_test
- freefem++_msh_io, a MATLAB code which can read and write files used by the FreeFem++ finite element program to store mesh information.
- freefem++_msh_io_test
- gamblers_ruin_simulation, a MATLAB code which simulates the game of gambler's ruin.
- gamblers_ruin_simulation_test
- gauss_seidel, a MATLAB code which implements the Gauss-Seidel iteration for linear systems.
- gauss_seidel_test
- gauss_seidel_poisson_1d, a MATLAB code which demonstrates how the linear system for a discretized version of the steady 1D Poisson equation can be solved by the Gauss-Seidel iteration.
- gauss_seidel_poisson_1d_test
- gaussian, a MATLAB code which evaluates the Gaussian function and its derivatives.
- gaussian_test,
- gdls, a MATLAB code which uses gradient descent to solve a linear least squares problem.
- gdls_test
- ge_to_crs, a MATLAB code which converts a matrix from General (GE) to Compressed Row Storage (CRS) format.
- ge_to_crs_test
- gegenbauer_cc, a MATLAB code which computes the Gegenbauer weighted integral of a function f(x) using a Clenshaw-Curtis approach.
- gegenbauer_cc_test
- gegenbauer_exactness, a MATLAB code which tests the polynomial exactness of Gauss-Gegenbauer quadrature rules.
- gegenbauer_exactness_test
- gegenbauer_polynomial, a MATLAB code which evaluates the Gegenbauer polynomial and associated functions.
- gegenbauer_polynomial_test
- gegenbauer_rule, a MATLAB code which computes and writes out a Gauss-Gegenbauer quadrature rule of given order.
- gegenbauer_rule_test
- gen_hermite_exactness, a MATLAB code which tests the polynomial exactness of generalized Gauss-Hermite quadrature rules.
- gen_hermite_exactness_test
- gen_hermite_rule, a MATLAB code which computes and writes out a generalized Gauss-Hermite quadrature rule of given order and parameter value.
- gen_hermite_rule_test
- gen_laguerre_exactness, a MATLAB code which tests the polynomial exactness of generalized Gauss-Laguerre quadrature rules.
- gen_laguerre_exactness_test
- gen_laguerre_rule, a MATLAB code which computes and writes out a generalized Gauss-Laguerre quadrature rule of given order and parameter value.
- gen_laguerre_rule_test
- geometry, a MATLAB code which performs geometric calculations in 2, 3 and M dimensional space, including the computation of angles, areas, containment, distances, intersections, lengths, and volumes.
- geometry_test
- gl_display, a MATLAB code which displays the points used in a 2D Gauss-Legendre quadrature rule;
- gl_display_test
- gmres, a MATLAB code which implements the generalized minimum residual (GMRES) method for solving a nonsymmetric sparse linear system A*x=b.
- gmres_test
- gmsh_io, a MATLAB code which can read or write some of the files created by the Gmsh program for 1D, 2D or 3D meshes used by the finite element method (FEM).
- gmsh_io_test
- gmsh_to_fem, a MATLAB code which reads a mesh data file created by the GMSH program and writes a pair of node and element files that correspond to the FEM format.
- gmsh_to_fem_test
- gnuplot_test, MATLAB codes which use gnuplot() to create various kinds of plots.
- gpl_display, a MATLAB code which tries to read the data in a typical gnuplot GPL file, and display it in a more attractive way than gnuplot is capable of.
- gpl_display_test
- gram_polynomial, a MATLAB code which evaluates the Gram polynomials and associated functions.
- gram_polynomial_test
- gram_schmidt, a MATLAB code which implements the Gram-Schmidt process to orthogonalize and normalize a set of vectors.
- gram_schmidt_test
- graph_representation, a MATLAB code which can express the representation of an abstract mathematical graph in several ways.
- graph_representation_test
- graphics_test, MATLAB codes which demonstrate how to make various kinds of plots.
- gray_code_display, a MATLAB code which computes the Hamming distance tables for both the binary and Gray codes, and displays 3D plots that illustrate how the Gray code does a better job of providing nearby representations for nearby numbers.
- gray_code_display_test
- grf_display, a MATLAB code which reads a GRF file defining a mathematical graph and displays it in the MATLAB graphics window.
- grf_display_test
- grf_io, a MATLAB code which reads or writes a GRF file;
- grf_io_test
- grid_display, a MATLAB code which reads a file of points on a grid or sparse grid, displays the grid and saves the image in a png file;
- grid_display_test
- gridlines, a MATLAB code which gives the user more control over drawing gridlines on a graph than the built in "grid on" command.
- gridlines_test
- grids_display, a MATLAB code which reads two files of grids or sparse grids, displaying the first with hollow blue dots, the second with solid red dots.
- grids_display_test
- gurobi_solution_read, a MATLAB code which reads a file created by the optimization package GUROBI, representing the solution of a polyomino tiling problem, and writes out a simple ASCII file that can be read by load().
- gurobi_solution_read_test
- haar, a MATLAB code which computes the Haar transform of data.
- haar_test
- halton, a MATLAB code which computes elements of a Halton Quasi Monte Carlo (QMC) sequence, using a simple interface.
- halton_test
- hammersley, a MATLAB code which computes elements of a Hammersley Quasi Monte Carlo (QMC) sequence, using a simple interface.
- hammersley_test
- hamming, a MATLAB code which implements some simple versions of Hamming codes which can detect and correct errors in data.
- hamming_test
- hand_area, a MATLAB code which estimates the area of a curve which outlines a hand.
- hand_area_test
- hand_data, MATLAB codes which carry out some numerical exercises based on data that came from tracing several points on a hand.
- hand_data_test
- hankel_cholesky, a MATLAB code which computes the upper Cholesky factor R of a nonnegative definite symmetric Hankel matrix so that H = R' * R.
- hankel_cholesky_test
- hankel_inverse, a MATLAB code which computes the inverse of a Hankel matrix.
- hankel_inverse_test
- hankel_spd, a MATLAB code which can compute a lower triangular matrix L which is the Cholesky factor of a symmetric positive definite (SPD) Hankel matrix H, that is, H = L * L'.
- hankel_spd_test
- hb_io, a MATLAB code which reads and writes sparse linear systems stored in the Harwell Boeing (HB) format for sparse matrices. This library is intended to handle the full range of HB formats.
- hb_io_test
- hb_to_mm, a MATLAB code which converts a sparse matrix from Harwell Boeing (HB) to Matrix Market (MM) format.
- hb_to_mm_test
- hb_to_msm, a MATLAB code which converts a sparse matrix stored in a Harwell Boeing (HB) format to MATLAB sparse matrix format;
- hb_to_msm_test
- hb_to_st, a MATLAB code which converts a sparse matrix from Harwell Boeing (HB) format to Sparse Triplet (ST) format.
- hb_to_st_test
- heated_plate, a MATLAB code which solves the steady state heat equation in a 2D rectangular region, and is intended as a starting point for a parallel version.
- heated_plate_test
- hello, a MATLAB code which prints out "Hello, world!".
- hello_test
- henon_heiles_ode, a MATLAB code which solves the Henon-Heiles system of ordinary differential equations (ODE) which model the motion of a star around the galactic center.
- henon_heiles_ode_test
- hermite_cubic, a MATLAB code which can compute the value, derivatives or integral of a Hermite cubic polynomial, or manipulate an interpolating function made up of piecewise Hermite cubic polynomials.
- hermite_cubic_test
- hermite_exactness, a MATLAB code which tests the polynomial exactness of Gauss-Hermite quadrature rules to estimate the integral of a function with density exp(-x^2) over the interval (-oo,+oo).
- hermite_exactness_test
- hermite_integrands, a MATLAB code which defines test integrands for Hermite integrals with density exp(-x^2) over the interval (-oo,+oo).
- hermite_integrands_test
- hermite_interpolant, a MATLAB code which computes the Hermite interpolant, a polynomial that matches function values and derivatives.
- hermite_interpolant_test
- hermite_polynomial, a MATLAB code which evaluates the physicist's Hermite polynomial, the probabilist's Hermite polynomial, the Hermite function, and related functions.
- hermite_polynomial_test
- hermite_product_display, a MATLAB code which displays an image of a function created by the Cartesian product of two Hermite polynomials, such as f(x,y) = h(3,x) * h(1,y).
- hermite_product_display_test
- hermite_product_polynomial, a MATLAB code which defines Hermite product polynomials, creating a multivariate polynomial as the product of univariate Hermite polynomials.
- hermite_product_polynomial_test
- hermite_rule, a MATLAB code which computes and writes out a Gauss-Hermite quadrature rule to estimate the integral of a function with density exp(-x^2) over the interval (-oo,+oo).
- hermite_rule_test
- hexagon_rule, a MATLAB code which computes a quadrature rule over the interior of the unit hexagon.
- hexagon_rule_test
- high_card_simulation, a MATLAB code which simulates a situation in which you see the cards in a deck one by one, and must select the one you think is the highest and stop.
- high_card_simulation_test
- hilbert_curve, a MATLAB code which computes the sequence of discrete Hilbert curves whose limit is a space-filling curve.
- hilbert_curve_test
- hilbert_curve_display, a MATLAB code which can plot a Hilbert curve of given order.
- hilbert_curve_display_test
- histogram_data_2d_sample, a MATLAB code which demonstrates how to construct a Probability Density Function (PDF) from sample data over a 2D domain, and then to use that PDF to create new samples.
- histogram_data_2d_test
- histogram_discrete, a MATLAB code which tries to make a histogram of data without using bins.
- histogram_discrete_test
- histogram_display, a MATLAB code which makes a bar plot of a set of data stored as columns in a file; the first column is the X values, and all the other columns are Y values to be shown as a stack of bars;
- histogram_display_test
- histogram_pdf_sample, a MATLAB code which demonstrates how sampling can be done by starting with the formula for a PDF, creating a histogram, constructing a histogram for the CDF, and then sampling.
- histogram_pdf_sample_test
- histogram_pdf_2d_sample, a MATLAB code which demonstrates how uniform sampling of a 2D region with respect to some known Probability Density Function (PDF) can be approximated by decomposing the region into rectangles, approximating the PDF by a piecewise constant function, constructing a histogram for the CDF, and then sampling.
- histogram_pdf_2d_sample_test
- histogramize, a MATLAB code which takes a vector of data and organizes it into a histogram of a given number of bins with given width and range, which can be displayed as a bar chart.
- histogramize_test
- hits, a MATLAB code which uses the HITS algorithm to assign authority and hub indices to a set of nodes in a directed network.
- hits_test
- house, a MATLAB code which includes a line segment outline of a house, and some programs to show how linear transformations affect the shape, by Cleve Moler.
- house_test
- humps, a MATLAB code which evaluates the humps function, its first and second derivatives and its antiderivative.
- humps_test
- humps_ode, a MATLAB code which solves an ordinary differential equation (ODE) whose solution is a double hump curve.
- humps_ode_test
- hyperball_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected from the interior of the unit hyperball in M dimensions.
- hyperball_distance_test
- hyperball_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the interior of the unit hyperball in M dimensions.
- hyperball_integrals_test
- hyperball_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate the integral of a function over the interior of the unit ball in M dimensions;
- hyperball_monte_carlo_test
- hypercube_exactness, a MATLAB code which tests the polynomial exactness of a quadrature rule over the interior of the unit hypercube in M dimensions.
- hyperball_exactness_test
- hypercube_grid, a MATLAB code which computes a grid of points over the interior of a hypercube in M dimensions.
- hypercube_grid_test
- hypercube_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the interior of the unit hypercube in M dimensions.
- hypercube_integrals_test
- hypercube_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate the integral of a function over the interior of the unit hypercube in M dimensions.
- hypercube_monte_carlo_test
- hypersphere_angle, a MATLAB code which considers the problem of describing the typical value of the angle between a pair of points randomly selected on the unit hypersphere in M dimensions. Since by symmetry, this will be zero, we instead look at the average of the absolute value of the dot product, and the corresponding angle. This starts out at 1 for dimension 1, and rapidly decreases as the spatial dimension increases.
- hypersphere_angle_test
- hypersphere_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected from the surface of the unit hypersphere in M dimensions.
- hypersphere_distance_test
- hypersphere_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the surface of the unit hypersphere in M dimensions.
- hypersphere_integrals_test
- hypersphere_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate the integral of a function on the surface of the unit sphere in M dimensions;
- hypersphere_monte_carlo_test
- hypersphere_properties, a MATLAB code which carries out various operations for an M dimensional hypersphere, including converting between Cartesian and spherical coordinates, stereographic projection, sampling the surface of the sphere, and computing the surface area and volume.
- hypersphere_properties_test
- hypersphere_surface, a MATLAB code which illustrates a procedure for estimating the location of a hypersurface in M dimensional space defined by a characteristic function or a signed function.
- hypersphere_surface_test
- i4lib, a MATLAB code which contains many utility routines, using single precision integer (I4) arithmetic.
- i4lib_test
- i4mat_rref2, a MATLAB code which computes a version of the reduced row echelon form of an integer matrix.
- i4mat_rref2_test
- image_boundary, a MATLAB code which reports the pixels which form the boundary between the black and white regions of a simple image.
- image_boundary_test
- image_components, a MATLAB code which seeks the connected nonzero or nonblack components of an image or an integer array.
- image_components_test
- image_contrast, MATLAB codes which applies image processing techniques to increase the contrast in an image.
- image_contrast_test
- image_decimate, a MATLAB code which drops the even rows and columns from an image.
- image_decimate_test
- image_denoise, a MATLAB code which applies simple filtering operations to a noisy image.
- image_denoise_test
- image_diffuse, a MATLAB code which uses diffusion to smooth out an image.
- image_diffuse_test
- image_double, a MATLAB code which doubles the height and width of an image by repeating each row and column.
- image_double_test
- image_edge, a MATLAB code which demonstrates a simple procedure for edge detection in images.
- image_edge_test
- image_match_genetic, a MATLAB code which tries to match a 256x256 JPEG image by blending 32 colored rectangles, using ideas from genetic algorithms, based on an program by Nick Berry.
- image_match_genetic_test
- image_noise, MATLAB codes which add noise to an image.
- image_noise_test
- image_normalize, a MATLAB code which reads image data from a file, converts it (if necessary) to grayscale, resizes it to H pixels by W pixels.
- image_normalize_test
- image_quantization, a MATLAB code which demonstrates how the KMEANS algorithm can be used to reduce the number of colors or shades of gray in an image.
- image_quantization_test
- image_rgb_to_gray, MATLAB codes which makes a grayscale version of an RGB image.
- image_rgb_to_gray_test
- image_threshold, MATLAB codes which make a black and white version of a grayscale image by setting all pixels below or above a threshold value to black or white.
- image_threshold_test
- imshow_numeric, a MATLAB code which accepts a numeric 2D array and displays it as a grayscale image.
- imshow_numeric_test
- index, a MATLAB code which converts an M dimensional vector index to a one-dimensional vector index; it can handle zero and one based indexing schemes, as well as column major and row major conventions.
- index_test
- interp, a MATLAB code which can be used for parameterizing and interpolating data;
- interp_test
- interp_cheby, a MATLAB code which interactively uses n Chebyshev spaced nodes in the interval [a,b] to interpolate a function f(x) with a polynomial.
- interp_cheby_test
- interp_equal, a MATLAB code which interactively uses n equally spaced nodes in the interval [a,b] to interpolate a function f(x) with a polynomial.
- interp_equal_test
- interp_ncs, a MATLAB code which interactively constructs a natural cubic spline (NCS) interpolant to a function f(x), using the "zero second derivative" condition at the endpoints.
- interp_ncs_test
- interp_spline, a MATLAB code which interactively constructs a cubic spline interpolant to a function f(x), using the 'not-a-knot' end conditions.
- interp_spline_test
- interp_spline_data, a MATLAB code which interactively constructs a cubic spline interpolant to (x,y) data, using the 'not-a-knot' end conditions.
- interp_spline_data_test
- interp_trig, a MATLAB code which interactively uses n equally spaced nodes in the interval [a,b] to interpolate a function f(x) with a trigonometric polynomial.
- interp_trig_test
- iplot, a MATLAB code which interactively plots a function f(x) over a domain a ≤ x ≤ b;
- iplot_test
- isbn, a MATLAB code which can determine the check digit for an International Standard Book Number or report whether a given ISBN is valid.
- isbn_test
- ising_2d_simulation, a MATLAB code which simulates the evolution of a 2D array of positive and negative charges, each of which is likely to flip to be in agreement with neighbors.
- ising_2d_simulation_test
- jacobi, a MATLAB code which implements the Jacobi iteration for the iterative solution of linear systems.
- jacobi_test
- jacobi_eigenvalue, a MATLAB code which implements the Jacobi iteration for the iterative determination of the eigenvalues and eigenvectors of a real symmetric matrix.
- jacobi_eigenvalue_test
- jacobi_exactness, a MATLAB code which tests the polynomial exactness of rules for integrals with a Jacobi weight function.
- jacobi_exactness_test
- jacobi_poisson_1d, a MATLAB code which demonstrates how the linear system for a discretized version of the steady 1D Poisson equation can be solved by the Jacobi iteration.
- jacobi_poisson_1d_test
- jacobi_polynomial, a MATLAB code which evaluates the Jacobi polynomial and associated functions.
- jacobi_polynomial_test
- jacobi_rule, a MATLAB code which computes and writes out a Gauss-Jacobi quadrature rule of given order.
- jacobi_rule_test
- jai_alai_simulation, a MATLAB code which simulates matches of jai alai.
- jai_alai_simulation_test
- jordan_random, a MATLAB code which returns a random matrix in Jordan canonical form.
- jordan_random_test
- kelley, a MATLAB code which implements iterative methods for linear and nonlinear problems, by Tim Kelley.
- kelley_test
- kepler_ode, a MATLAB code which defines the ordinary differential equations (ODE) for a Kepler two-body gravitational system.
- kepler_ode_test
- kepler_perturbed_ode, a MATLAB code which defines the ordinary differential equations (ODE) for a perturbed Kepler two-body gravitational system.
- kepler_perturbed_ode_test
- keyword_test, a MATLAB code which demonstrates how to write a function which accepts named keywords, using the MATLAB Name/Value paired argument convention.
- kmeans, a MATLAB code which handles the K-Means problem, which organizes a set of N points in M dimensions into K clusters;
- kmeans_test
- kmeans_fast, a MATLAB code which contains several different algorithms for the K-Means problem, which organizes a set of N points in M dimensions into K clusters, by Charles Elkan.
- kmeans_fast_test
- knapsack_01, a MATLAB code which uses brute force to solve small versions of the 0/1 knapsack problem;
- knapsack_01_test
- kronrod, a MATLAB code which can compute a Gauss and Gauss-Kronrod pair of quadrature rules of arbitrary order, by Robert Piessens, Maria Branders.
- kronrod_test
- l4lib, a MATLAB code which contains many utility routines, using one byte logical (L4) variables.
- l4lib_test
- lagrange_approx_1d, a MATLAB code which defines and evaluates the Lagrange polynomial p(x) of degree m which approximates a set of nd data points (x(i),y(i)).
- lagrange_approx_1d_test
- lagrange_basis_display, a MATLAB code which displays the basis functions associated with a given set of nodes used with the Lagrange interpolation scheme.
- lagrange_basis_display_test
- lagrange_interp_1d, a MATLAB code which defines and evaluates the Lagrange polynomial p(x) which interpolates a set of data depending on a 1D argument, so that p(x(i)) = y(i).
- lagrange_interp_1d_test
- lagrange_interp_2d, a MATLAB code which defines and evaluates the Lagrange polynomial p(x,y) which interpolates a set of data depending on a 2D argument that was evaluated on a product grid, so that p(x(i),y(j)) = z(i,j).
- lagrange_interp_2d_test
- lagrange_interp_nd, a MATLAB code which defines and evaluates the Lagrange polynomial p(x) which interpolates a set of data depending on an M dimensional argument that was evaluated on a product grid, so that p(x(i)) = z(i).
- lagrange_interp_nd_test
- lagrange_nd, a MATLAB code which implements several multivariate Lagrange interpolation schemes developed by Tomas Sauer.
- lagrange_nd_test
- laguerre_exactness, a MATLAB code which tests the polynomial exactness of Gauss-Laguerre quadrature rules for integrating functions with density exp(-x) over [0,+oo).
- laguerre_exactness_test
- laguerre_integrands, a MATLAB code which implements test problems for approximate integration over a semi-infinite interval, often carried out using Gauss-Laguerre quadrature.
- laguerre_integrands_test
- laguerre_polynomial, a MATLAB code which evaluates the Laguerre polynomial, the generalized Laguerre polynomials, and the Laguerre function.
- laguerre_polynomial_test
- laguerre_product, a MATLAB code which computes weighted integrals of products of Laguerre polynomials.
- laguerre_product_test
- laguerre_rule, a MATLAB code which computes a Gauss-Laguerre quadrature rule of given order, and writes it to a file.
- laguerre_rule_test
- laplacian, a MATLAB code which carries out computations related to the discrete Laplacian operator, including full or sparse evaluation, evaluation for unequally spaced data sampling points, application to a set of data samples, solution of associated linear systems, eigenvalues and eigenvectors, and extension to 2D and 3D geometry.
- laplacian_test
- latin_center, a MATLAB code which computes N points in an M dimensional Latin Center square; latin_center_test
- latin_cover, a MATLAB code which produces N Latin squares which cover an NxN square, or NxN Latin cubes which cover an NxNxN cube.
- latin_cover_test
- latin_edge, a MATLAB code which returns N points in an M dimensional Latin Edge square;
- latin_edge_test
- latin_random, a MATLAB code which returns N points in an M dimensional Latin Random square;
- latin_random_test
- latinize, a MATLAB code which adjusts N points in M dimensions to form a Latin hypercube;
- latinize_test
- lattice_rule, a MATLAB code which returns lattice rules for M dimensional integration;
- lattice_rule_test
- lcvt, a MATLAB code which makes a sort of Latinized Centroidal Voronoi Tessellation (LCVT);
- lcvt_test
- least_squares_approximant, a MATLAB code which finds a polynomial approximant to data using linear least squares (LLS).
- least_squares_approximant_test
- lebesgue, a MATLAB code which is given a set of nodes in 1D, and plots the Lebesgue function, and estimates the Lebesgue constant, which measures the maximum magnitude of the potential error of Lagrange polynomial interpolation.
- lebesgue_test
- legendre_exactness, a MATLAB code which tests the monomial exactness of quadrature rules for the Legendre problem of integrating a function with density 1 over the interval [-1,+1].
- legendre_exactness_test
- legendre_polynomial, a MATLAB code which evaluates the Legendre polynomial and associated functions.
- legendre_polynomial_test
- legendre_product, a MATLAB code which computes weighted integrals of products of Legendre polynomials.
- legendre_product_test
- legendre_product_polynomial, a MATLAB code which defines Legendre product polynomials, creating a multivariate polynomial as the product of univariate Legendre polynomials.
- legendre_product_polynomial_test
- legendre_rule, a MATLAB code which writes out a Gauss-Legendre quadrature rule of given order.
- legendre_rule_test
- legendre_rule_fast, a MATLAB code which uses a fast (order N) algorithm to compute a Gauss-Legendre quadrature rule of given order.
- legendre_rule_fast_test
- legendre_shifted_polynomial, a MATLAB code which evaluates the shifted Legendre polynomial, with the domain [0,1].
- legendre_shifted_polynomial_test
- levels, a MATLAB code which makes a contour plot, choosing the contour levels using random sampling.
- levels_test
- levenshtein, a MATLAB code which returns the Levenshtein distance between two strings.
- levenshtein_test
- life, a MATLAB code which computes a few steps of the evolution of John Conway's Game of Life, intended as a starting point for implementing a parallel version.
- life_test
- lights_out, a MATLAB code which sets up the "Lights Out" game and allows a user to try to solve it.
- line_cvt_lloyd, a MATLAB code which applies the Lloyd iteration repeatedly to a set of N points, to compute a Centroidal Voronoi Tessellation (CVT) over the interior of a line segment in 1D.
- line_cvt_lloyd_test
- line_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected in the unit line segment.
- line_distance_test
- line_fekete_rule, a MATLAB code which estimates the location of N Fekete points, for polynomial interpolation or quadrature, over the interior of a line segment in 1D.
- line_fekete_rule_test
- line_felippa_rule, a MATLAB code which returns a Felippa quadrature rules for approximating integrals over the interior of a line segment in 1D.
- line_felippa_rule_test
- line_grid, a MATLAB code which computes a grid of points over the interior of a line segment in 1D.
- line_grid_test
- line_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the length of the unit line in 1D.
- line_integrals_test
- line_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate the integral of a function over the length of the unit line in 1D.
- line_monte_carlo_test
- line_ncc_rule, a MATLAB code which computes a Newton Cotes Closed (NCC) quadrature rule, using equally spaced points, over the interior of a line segment in 1D.
- line_ncc_rule_test
- line_nco_rule, a MATLAB code which computes a Newton Cotes Open (NCO) quadrature rule, using equally spaced points, over the interior of a line segment in 1D.
- line_nco_rule_test
- linpack_bench, a MATLAB code which is the linpack benchmark;
- linpack_bench_test
- linpack_bench_backslash, a MATLAB code which is the linpack benchmark, using the MATLAB built-in backslash operator;
- linpack_bench_backslash_test
- linpack_d, a MATLAB code which constitutes a linear algebra library for double precision real arithmetic; it includes a function for the singular value decomposition (SVD) of a rectangular matrix. The original version of this library is by Jack Dongarra, Jim Bunch, Cleve Moler, Pete Stewart.
- linpack_d_test
- linpack_z, a MATLAB code which constitutes a linear algebra library for double precision complex arithmetic; it includes a function for the singular value decomposition (SVD) of a rectangular matrix. The original version of this library is by Jack Dongarra, Jim Bunch, Cleve Moler, Pete Stewart.
- linpack_z_test
- llsq, a MATLAB code which solves the simple linear least squares (LLS) problem of finding the formula of a straight line y=a*x+b which minimizes the root-mean-square error to a set of N data points.
- llsq_test
- load_test
- lobatto_polynomial, a MATLAB code which evaluates Lobatto polynomials similar to Legendre polynomials except that they are 0 at both endpoints.
- lobatto_polynomial_test
- local_min_rc, a MATLAB code which finds a local minimum of a scalar function of a scalar variable, without the use of derivative information, using reverse communication (RC), by Richard Brent.
- local_min_rc_test
- log_normal, a MATLAB code which returns quantities related to the log normal Probability Distribution Function (PDF).
- log_normal_test
- log_normal_truncated_ab, a MATLAB code which returns quantities related to the log normal Probability Distribution Function (PDF) truncated to the interval [a,b].
- log_normal_truncated_ab_test
- lorenz_cluster_test
- lorenz_ode, defines the right hand side of the Lorenz ODE system.
- lorenz_ode_test
- lorenz_sensitivity_test
- luhn, a MATLAB code which can compute the Luhn check digit for a string, or verify a string, as used for error detection in credit card numbers.
- luhn_test
- machar, a MATLAB code which dynamically computes the values of various machine characteristic constants, by William Cody;
- machar_test
- machine, a MATLAB code which returns tabulated values of the constants associated with computer arithmetic;
- machine_test
- mandelbrot, a MATLAB code which generates an image of the Mandelbrot set;
- mandelbrot_test
- maple_area, a MATLAB code which takes the list of pixels that form the boundary of the image of a maple leaf within a picture, and uses grid, Monte Carlo, and Quasi Monte Carlo (QMC) sampling to estimate the area of the leaf.
- maple_area_test
- maple_boundary, a MATLAB code which reads an image of a maple leaf and extracts the list of pixels that form the boundary.
- maple_boundary_test
- mario, a MATLAB code which creates a sort of "needlepoint" image of Mario, as an array of colored squares.
- mario_test
- matlab_test, MATLAB codes which illustrate the use of MATLAB scripts and M-files;
- matlab_calls_c, MATLAB codes which illustrate how C functions can be written, compiled, and called from MATLAB using the mex facility;
- matlab_calls_c++, MATLAB codes which illustrate how C++ functions can be written, compiled, and called from MATLAB using the mex facility;
- matlab_calls_f77, MATLAB codes which illustrate how FORTRAN77 functions can be written, compiled, and called from MATLAB using the mex facility;
- matlab_calls_f90, MATLAB codes which illustrate how FORTRAN90 functions can be written, compiled, and called from MATLAB using the mex facility;
- matlab_commandline, MATLAB codes which illustrate how MATLAB can be run from the UNIX command line, that is, not with the usual MATLAB command window.
- matlab_compiler, MATLAB codes which illustrate the use of the Matlab compiler, which allows you to run a Matlab application outside the Matlab environment.
- matlab_condor, MATLAB codes which illustrate how MATLAB can be run in batch mode using the condor queueing system.
- matlab_graphics, MATLAB codes which demonstrate a few issues that arise when producing graphic images with MATLAB.
- matlab_kmeans, MATLAB codes which illustrate the use of the Matlab kmeans() function for clustering N sets of M-dimensional data into K clusters.
- matlab_map, MATLAB codes which illustrate the use of the MATLAB mapping toolbox to draw maps of the world, countries, the US, or individual states.
- matlab_mistake, MATLAB codes which illustrate some simple but devious programming mistakes in MATLAB.
- matlab_os, MATLAB codes which illustrate how the system command can be used to allow MATLAB to issue commands to the computer operating system (UNIX or DOS);
- matlab_random, MATLAB codes which illustrate the use of the Matlab random number generator (RNG) routines.
- matlab_return, MATLAB codes which illustrate that explicitly invoking the return statment can be surprisingly costly;
- matrix_analyze, a MATLAB code which reports whether a matrix has various properties.
- matrix_analyze_test
- matrix_exponential, a MATLAB code which demonstrates some simple approaches to the problem of computing the exponential of a matrix.
- matrix_exponential_test
- md, a MATLAB code which carries out a molecular dynamics simulation, and is intended as a starting point for implementing a parallel version.
- md_test
- md_fast, a MATLAB code which carries out a molecular dynamics simulation; it is a version of MD that has been revised to take advantage of the MATLAB vector abilities.
- md_fast_test
- memory, a MATLAB code which declares and uses a sequence of larger and larger arrays, to see what the memory limits are on a given computer.
- memory_test
- mesh_bandwidth, a MATLAB code which returns the geometric bandwidth associated with a mesh of elements of any order and in a space of M dimensions.
- mesh_bandwidth_test
- mesh_display, a MATLAB code which plots the nodes and elements of a polygonal mesh, with optional numbering.
- mesh_display_test
- mesh_etoe, a MATLAB code which uses ETOV, the mesh element-to-vertex connectivity, to construct ETOE, the element-to-element connectivity.
- mesh_etoe_test
- mesh_vtoe, a MATLAB code which uses ETOV, the mesh element-to-vertex connectivity, to construct VTOE, the vertex-to-element connectivity.
- mesh_vtoe_test
- mesh2d, a MATLAB code which can automatically create a triangular mesh for a given polygonal region, by Darren Engwirda.
- mesh2d_test
- mesh2d_hand, a MATLAB code which reads in a set of 59 points which outline a human hand, and calls mesh2d(), which is able to create a fine triangular mesh of the region outlined by the points.
- mesh2d_write, a MATLAB code which demonstrates how node and element data from mesh2d can be written to files.
- mgmres, a MATLAB code which applies the restarted Generalized Minimum Residual (GMRES) algorithm to solve a sparse linear system, using Compressed Row Storage (CRS) or sparse triplet (ST) format, by Lili Ju.
- mgmres_test
- mgs, a MATLAB code which is a legacy code, which the student is encouraged to study, understand, and document. This example is due to Diane O'Leary.
- mgs_test
- midpoint, a MATLAB code which solves one or more ordinary differential equations (ODE) using the midpoint method.
- midpoint_test
- mm_io, a MATLAB code which reads and writes a Matrix Market (MM) Sparse Matrix File;
- mm_io_test
- mm_to_hb, a MATLAB code which reads the sparse matrix information from an Matrix Market (MM) file and writes a corresponding Harwell Boeing (HB) file.
- mm_to_hb_test
- mm_to_msm, a MATLAB code which reads a Matrix Market (MM) sparse matrix file and creates a corresponding MATLAB sparse matrix data structure.
- mm_to_msm_test
- mm_to_st, a MATLAB code which reads a Matrix Market (MM) sparse matrix file and writes a corresponding Sparse Triplet (ST) file.
- mm_to_st_test
- mnist_neural, a MATLAB code which constructs a neural network in order to classify images of digits.
- mnist_neural_test
- monoalphabetic, a MATLAB code which can apply a monoalphabetic substitution cipher to a string of text.
- monoalphabetic_test
- monomial, a MATLAB code which enumerates, lists, ranks, unranks and randomizes multivariate monomials in a space of M dimensions, with total degree less than N, equal to N, or lying within a given range.
- monomial_test
- monomial_value, a MATLAB code which evaluates a monomial in M dimensions.
- monomial_value_test
- monte_carlo_rule, a MATLAB code which generates a dataset of N random M dimensional points, regards it as a quadrature rule for the unit hypercube, and writes out three files of information.
- monte_carlo_rule_test
- msm_to_hb, a MATLAB code which writes a MATLAB sparse matrix to a Harwell Boeing (HB) file, by Xiaoye Li.
- msm_to_hb_test
- msm_to_mm, a MATLAB code which writes a MATLAB sparse matrix to a Matrix Market (MM) file;
- msm_to_mm_test
- msm_to_st, a MATLAB code which writes a MATLAB sparse matrix to a Sparse Triplet (ST) file;
- msm_to_st_test
- multigrid_poisson_1d, a MATLAB code which applies the multigrid method to a discretized version of the 1D Poisson equation.
- multigrid_poisson_1d_test
- mxm, a MATLAB code which sets up a matrix multiplication problem A=B*C of arbitrary size, and compares the time required for IJK, IKJ, JIK, JKI, KIJ and KJI orderings of the loops.
- mxm_test
- naca, a MATLAB code which can take the parameters of certain NACA airfoils and return the coordinates of a sequence of points that outline the wing shape. The shape can be displayed with MATLAB graphics.
- naca_test
- nas, a MATLAB code which runs the NASA kernel benchmark.
- nas_test
- navier_stokes_2d_exact, a MATLAB code which evaluates an exact solution to the incompressible time-dependent Navier-Stokes equations (NSE) over an arbitrary domain in 2D.
- navier_stokes_2d_exact_test
- navier_stokes_3d_exact, a MATLAB code which evaluates an exact solution to the incompressible time-dependent Navier-Stokes equations (NSE) over an arbitrary domain in 3D.
- navier_stokes_3d_exact_test
- navier_stokes_mesh2d, data files which define meshes for several 2D test problems involving the Navier Stokes equations (NSE) for fluid flow, provided by Leo Rebholz.
- navier_stokes_mesh2d_test
- navier_stokes_mesh3d, data files which define meshes for several 3D test problems involving the Navier Stokes equations (NSE) for fluid flow, provided by Leo Rebholz.
- navier_stokes_mesh3d_test
- ncm, MATLAB codes which accompany the textbook "Numerical Computing with MATLAB", by Cleve Moler.
- ncm_test
- nearest_interp_1d, a MATLAB code which interpolates a set of data using a piecewise constant interpolant defined by the nearest neighbor criterion.
- nearest_interp_1d_test
- neighbors_to_metis_graph, a MATLAB code which reads a file describing the neighbor structure of a triangulation or tet mesh, and writes a metis graph file suitable for input to one of the family of programs based on metis.
- neighbors_to_metis_graph_test
- nelder_mead, a MATLAB code which implements the Nelder-Mead algorithm for the minimization of a scalar function of several variables, by Jeff Borggaard.
- nelder_mead_test
- nested_sequence_display, a MATLAB code which displays a set of nested sequences.
- nested_sequence_display_test
- netcdf_test
- newton_interp_1d, a MATLAB code which finds a polynomial interpolant to data using Newton divided differences.
- newton_interp_1d_test
- niederreiter2, a MATLAB code which computes the Niederreiter M dimensional Quasi Mont Carlo (QMC) sequence, base 2;
- niederreiter2_test
- nint_exactness_mixed, a MATLAB code which measures the polynomial exactness of an M dimensional quadrature rule based on a mixture of 1D quadrature rule factors.
- nint_exactness_mixed_test
- nintlib, a MATLAB code which carries out approximate integration (quadrature) in M dimensions;
- nintlib_test
- nonlin_bisect, a MATLAB code which interactively uses bisection to seek a zero of a function f(x) within a domain a ≤ x ≤ b;
- nonlin_bisect_test
- nonlin_fixed_point, a MATLAB code which interactively uses fixed point iteration x=g(x) to seek a zero of a function f(x), given a starting value x0, and a number of iterations it;
- nonlin_fixed_point_test
- nonlin_newton, a MATLAB code which interactively uses the Newton method, given formulas for f(x) and f'(x) and a starting point a.
- nonlin_newton_test
- nonlin_regula, a MATLAB code which interactively uses the regula falsi method to seek a zero of a function f(x) within a domain a ≤ x ≤ b;
- nonlin_regula_test
- nonlin_secant, a MATLAB code which interactively uses the secant method to seek a zero of a function f(x) given two starting estimates a and b;
- nonlin_secant_test
- norm_l1, a MATLAB code which interactively estimates the L1 norm of a function over an interval [a,b], with the function entered as a string.
- norm_l1_test
- norm_l2, a MATLAB code which interactively estimates the L2 norm of a function over an interval [a,b], with the function entered as a string.
- norm_l2_test
- norm_loo, a MATLAB code which interactively estimates the L-infinity norm of a function over an interval [a,b], with the function entered as a string.
- norm_loo_test
- norm_rms, a MATLAB code which interactively estimates the root mean square (RMS) norm of a function over an interval [a,b], with the function entered as a string.
- norm_rms_test
- normal, a MATLAB code which implements normal random number generators (RNG) for real and complex arithmetic, for scalars, vectors, and matrices.
- normal_test
- normal01_multivariate_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected from an isotropic standard normal distribution in M dimensions.
- normal01_multivariate_distance_test
- obj_display, a MATLAB code which displays an OBJ 3D graphics file;
- obj_display_test
- obj_io, a MATLAB code which reads and writes the data in an OBJ 3D graphics file;
- obj_io_test
- obj_to_tri_surface, a MATLAB code which reads an OBJ 3D graphics file and extracts the surface mesh data as a TRI_SURFACE dataset.
- obj_to_tri_surface_test
- octopus, a MATLAB code which contains some Octave utilities.
- octopus_test
- ode_conservation, a MATLAB code which monitors the conservation of a quantity that should be constant, during the solution of an ordinary differential equation (ODE).
- ode_conservation_test
- ode_euler, a MATLAB code which interactively applies the Euler method to estimate the solution of an ordinary differential equation y'=f(x,y), over the interval [a,b], with initial condition y(a)=ya, using n steps.
- ode_euler_test
- ode_euler_backward, a MATLAB code which interactively applies the backward Euler method to estimate the solution of an ordinary differential equation y'=f(x,y), over the interval [a,b], with initial condition y(a)=ya, using n steps.
- ode_euler_backward_test
- ode_euler_system, a MATLAB code which interactively applies the Euler method to estimate the solution of a system of ordinary differential equations y'=f(x,y), over the interval [a,b], with initial condition y(a)=ya, using n steps.
- ode_euler_system_test
- ode_midpoint, a MATLAB code which interactively applies the midpoint method to estimate the solution of an ordinary differential equation y'=f(x,y), over the interval [a,b], with initial condition y(a)=ya, using n steps.
- ode_midpoint_test
- ode_midpoint_system, a MATLAB code which interactively applies the midpoint method to estimate the solution of a system of ordinary differential equations y'=f(x,y), over the interval [a,b], with initial condition vector y(a)=ya, using n steps.
- ode_midpoint_system_test
- ode_rk4, a MATLAB code which interactively applies a fourth order Runge-Kutta method to estimate the solution of an ordinary differential equation y'=f(x,y), over the interval [a,b], with initial condition y(a)=ya, using n steps.
- ode_rk4_test
- ode_trapezoidal, a MATLAB code which interactively applies the trapezoidal method to estimate the solution of an ordinary differential equation y'=f(x,y), over the interval [a,b], with initial condition y(a)=ya, using n steps.
- ode_trapezoidal_test
- ode_sweep, a MATLAB code which computes a grid of solutions to a parameterized system of ordinary differential equations (ODE).
- ode_sweep_test
- ode23_test
- ode45_test
- opt_golden, a MATLAB code which interactively estimates a minimizer of a function f(x) over the interval [a,b], assuming f(x) is unimodular ("U-shaped") over [a,b].
- opt_golden_test
- opt_gradient_descent, a MATLAB code which interactively seeks a local minimum of a function f(x), given a formula for the derivative f'(x), a starting point x0, and a stepsize factor gamma.
- opt_gradient_descent_test
- opt_quadratic, a MATLAB code which interactively uses quadratic interpolation to estimate a critical point of a function f(x) given three starting points, an iteration limit n, and tolerances for x and y.
- opt_quadratic_test
- opt_sample, a MATLAB code which interactively estimates the minimum and maximum of a function f(x) over an interval [a,b], using n random sample values, with the function entered as a string.
- opt_sample_test
- ornstein_uhlenbeck, a MATLAB code which approximates solutions of the Ornstein-Uhlenbeck stochastic ordinary differential equation (SODE) using the Euler method, the Euler-Maruyama method, and the Milstein method.
- ornstein_uhlenbeck_test
- outliers_test
- optimal_control_1d, a MATLAB code which seeks the optimal control function for a 1-dimensional system which is represented using the finite element method (FEM);
- optimal_control_1d_test
- oscillator_ode, a MATLAB code which defines the highly oscillatory ordinary differential equation (ODE).
- oscillator_ode_test
- owen, a MATLAB code which evaluates the Owen T function;
- owen_test
- padua, a MATLAB code which returns the coordinates of the 2D Padua points, as well as interpolation weights or quadrature weights, and images of the points in MATLAB graphics files.
- padua_test
- pagerank, a MATLAB code which illustrates the eigenvalue (power method) and surfer (Markov chain) approaches to ranking web pages.
- pagerank_test
- paraheat_gaussian, a MATLAB code which sets up and solves a parameterized steady heat equation in a 2D spatial domain, with a gaussian diffusivity.
- paraheat_gaussian_test
- paraheat_gaussian_plot, a MATLAB code which use radial basis functions (RBF) to reconstruct the finite element solution sampled by paraheat_gaussian().
- paraheat_gaussian_sample, a MATLAB code which repeatedly calls paraheat_gaussian() to set up and solve a parameterized steady heat equation in a 2D spatial domain, with a gaussian diffusivity, saving values of the finite element solution at selected points, and writing the saved data to a file.
- paraheat_pwc, a MATLAB code which can set up and solve a parameterized steady heat equation in a 2D spatial domain, using diffusivity parameterized by vc, and reporting solution values vs at selected sensor locations. Options allow for this function to be sampled at many parameter values, or for the finite element function to be reconstructed from the sensor values.
- paraheat_pwc_test
- paraheat_pwc_1d, a MATLAB code which sets up and solves a parameterized steady heat equation in a 1D spatial domain, with a piecewise constant diffusivity.
- paraheat_pwc_1d_test
- paraheat_pwc_plot, a MATLAB code which use radial basis functions (RBF) to reconstruct the finite element solution sampled by paraheat_pwc().
- paraheat_pwc_sample, a MATLAB code which repeatedly calls paraheat_pwc() to set up and solve a parameterized steady heat equation in a 2D spatial domain, with a piecewise constant diffusivity, saving values of the finite element solution at selected points, and writing the saved data to a file.
- pariomino, a MATLAB code which considers pariominoes, which are polyominoes with a checkerboard parity, and the determination of tilings of a region using a specific set of pariominoes.
- pariomino_test
- partial_digest, a MATLAB code which seeks solutions of the partial digest problem.
- partial_digest_test
- partition_problem, a MATLAB code which seeks solutions of the partition problem, splitting a set of integers into two subsets with equal sum.
- partition_problem_test
- patterson_rule, a MATLAB code which returns the points and weights of a 1D Gauss-Patterson quadrature rule of order 1, 3, 7, 15, 31, 63, 127, 255 or 511.
- patterson_rule_test
- pbma_io, a MATLAB code which reads or writes an ASCII Portable Bit Map (PBM) graphics file;
- pbma_io_test
- pce_ode_hermite, a MATLAB code which sets up a scalar stochastic ordinary differential equation (SODE) for exponential decay with an uncertain decay rate, using a polynomial chaos expansion (PCE) in terms of Hermite polynomials.
- pce_ode_hermite_test
- pdepe_test
- pdflib, a MATLAB code which evaluates Probability Density Functions (PDF) and produces random samples from them, including beta, binomial, chi, exponential, gamma, inverse chi, inverse gamma, multinomial, normal, scaled inverse chi, and uniform.
- pdflib_test
- peak_movie, a MATLAB code which creates the pieces of an animation, one frame at a time. Each frame is independently created and saved as a JPEG file.
- pendulum_ode, a MATLAB code which sets up the ordinary differential equations (ODE) that represent a linear model of the behavior of a pendulum of length L under a gravitational force of strength G.
- pendulum_ode_test
- pendulum_nonlinear_ode, a MATLAB code which sets up the ordinary differential equations (ODE) that represent a nonlinear model of the behavior of a pendulum of length L under a gravitational force of strength G.
- pendulum_nonlinear_ode_test
- perceptron_test
- pgma_io, a MATLAB code which reads or writes an ASCII Portable Gray Map (PGM) image file;
- pgma_io_test
- pi_spigot, a MATLAB code which produces N digits of the decimal expansion of pi.
- pi_spigot_test
- pic, a MATLAB code which uses the Particle In Cell (PIC) method to simulate the motion of electrically charged particles past a plate, and is intended as a starting point for implementing a parallel version.
- pic_test
- pink_noise, a MATLAB code which computes a pink noise signal obeying a 1/f power law.
- pink_noise_test
- plasma_matrix, a MATLAB code which demonstrates how a large sparse MATLAB matrix can be written to or read from a Harwell-Boeing sparse matrix file.
- plasma_matrix_test
- poisson, a MATLAB code which solves the Poisson equation in a rectangle, intended as the starting point for the creation of a parallel version.
- poisson_test
- poisson_simulation, a MATLAB code which simulates a Poisson process in which events randomly occur with an average waiting time of Lambda.
- poisson_simulation_test
- polpak, a MATLAB code which evaluates a variety of mathematical functions, including Chebyshev, Gegenbauer, Hermite, Jacobi, Laguerre, Legendre polynomials, and the Collatz sequence.
- polpak_test
- polygon_average, a MATLAB code which demonstrates a process of repeatedly averaging and normalizing the vertices of a polygon, illustrating a property of the power method.
- polygon_average_test
- polygon_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected from the interior of a polygon in 2D.
- polygon_distance_test
- polygon_grid, a MATLAB code which generates a grid of points over the interior of a polygon in 2D.
- polygon_grid_test
- polygon_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the interior of a polygon in 2D.
- polygon_integrals_test
- polygon_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate the integral of a function over the interior of a polygon in 2D.
- polygon_monte_carlo_test
- polygon_properties, a MATLAB code which computes properties of an arbitrary polygon in the plane, defined by a sequence of vertices, including interior angles, area, centroid, containment of a point, convexity, diameter, distance to a point, inradius, lattice area, nearest point in set, outradius, uniform sampling.
- polygon_properties_test
- polygon_triangulate, a MATLAB code which triangulates a (possibly nonconvex) polygon in 2D, based on a C program by Joseph ORourke;
- polygon_triangulate_test
- polygonal_surface_display, a MATLAB code which displays a surface in 3D described as a set of polygons;
- polygonal_surface_display_test
- polynomial, a MATLAB code which adds, multiplies, differentiates, evaluates and prints multivariate polynomials in a space of M dimensions.
- polynomial_test
- polynomials, a MATLAB code which defines multivariate polynomials over rectangular domains, for which certain information is to be determined, such as the maximum and minimum values.
- polynomials_test
- polyomino_parity, a MATLAB code which uses parity considerations to determine whether a given set of polyominoes can tile a specified region.
- polyomino_parity_test
- polyominoes, a MATLAB code which defines, solves, and plots a variety of polyomino tiling problems, which are solved by a direct algebraic approach, instead of the more typical brute-force or backtracking methods.
- polyominoes_test
- power_method, a MATLAB code which carries out the power method for finding a dominant eigenvalue and its eigenvector.
- power_method_test
- power_rule, a MATLAB code which constructs a power rule, that is, a product quadrature rule from identical 1D factor rules.
- power_rule_test
- pplane8, a MATLAB code which allows a user to interactively explore the phase plane of a system of autonomous ordinary differential equations. On starting the program, the user is given an interface in which to enter the equations and the screen limits, as well as a graphics screen on which the direction field is shown. Clicking any point in the graphics screen results in a trace of the phase plane curve through that point. The program is by Hugh Harvey and George Williams.
- ppma_io, a MATLAB code which reads or writes an ASCII Portable Pixel Map (PPM) image file;
- ppma_io_test
- praxis, a MATLAB code which minimizes a scalar function of several variables, without requiring derivative information, by Richard Brent.
- praxis_test
- predator_prey_ode, a MATLAB code which solves a time-dependent predator-prey system of ordinary differential equations (ODE).
- predator_prey_ode_test
- prime, a MATLAB code which counts the number of primes between 1 and N, and is intended as a starting point for a parallel version.
- prime_test
- prime_plot, a MATLAB code which displays a box plot of the prime and composite numbers.
- prime_plot_test
- prob, a MATLAB code which evaluates, samples, inverts, and characterizes a number of Probability Density Functions (PDF) and Cumulative Density Functions (CDF), including anglit, arcsin, benford, birthday, bernoulli, beta_binomial, beta, binomial, bradford, burr, cardiod, cauchy, chi, chi squared, circular, cosine, deranged, dipole, dirichlet mixture, discrete, empirical, english sentence and word length, error, exponential, extreme values, f, fisk, folded normal, frechet, gamma, generalized logistic, geometric, gompertz, gumbel, half normal, hypergeometric, inverse gaussian, laplace, levy, logistic, log normal, log series, log uniform, lorentz, maxwell, multinomial, nakagami, negative binomial, normal, pareto, planck, poisson, power, quasigeometric, rayleigh, reciprocal, runs, sech, semicircular, student t, triangle, uniform, von mises, weibull, zipf.
- prob_test
- product_rule, a MATLAB code which creates an M dimensional quadrature rule from a product of distinct 1d quadrature rules;
- product_rule_test
- profile_test
- profile_data, a MATLAB code which carries out some numerical exercises based on data that came from tracing the profile of a face.
- profile_data_test
- puzzles, MATLAB codes which solve simple puzzles;
- pwc_plot_1d, a MATLAB code which converts the definition of a piecewise constant function of a 1D argument into plottable data.
- pwc_plot_1d_test
- pwc_plot_2d, a MATLAB code which converts the definition of a piecewise constant function of a 2D argument into plottable data.
- pwc_plot_2d_test
- pwl_approx_1d, a MATLAB code which approximates a set of data using a piecewise linear function.
- pwl_approx_1d_test
- pwl_interp_1d, a MATLAB code which interpolates a set of data using a piecewise linear function.
- pwl_interp_1d_test
- pwl_interp_2d, a MATLAB code which evaluates a piecewise linear interpolant to data defined on a regular 2D grid.
- pwl_interp_2d_test
- pwl_interp_2d_scattered, a MATLAB code which evaluates a piecewise linear interpolant to data which is available at an irregularly arranged set of points.
- pwl_interp_2d_scattered_test
- pwl_product_integral, a MATLAB code which calculates the exact value of the integral of the product of two piecewise linear functions f(x) and g(x).
- pwl_product_integral_test
- pyramid_exactness, a MATLAB code which investigates the polynomial exactness of a quadrature rule over the interior of the unit pyramid in 3D.
- pyramid_exactness_test
- pyramid_felippa_rule, a MATLAB code which returns a Felippa quadrature rules for approximating integrals over the interior of a pyramid in 3D.
- pyramid_felippa_rule_test
- pyramid_grid, a MATLAB code which computes a grid of points over the interior of the unit pyramid in 3D;
- pyramid_grid_test
- pyramid_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the interior of the unit pyramid in 3D.
- pyramid_integrals_test
- pyramid_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate integrals of a function over the interior of the unit pyramid in 3D;
- pyramid_monte_carlo_test
- pyramid_rule, a MATLAB code which computes a quadrature rule over the interior of the unit pyramid in 3D.
- pyramid_rule_test
- qr_solve, a MATLAB code which computes the linear least squares (LLS) solution of a system A*x=b using the QR factorization.
- qr_solve_test
- quad, a MATLAB code which applies a quadrature rule to estimate an integral, intended as a starting point for parallelization exercises.
- quad_test
- quad_gauss, a MATLAB code which interactively uses an n-point Gauss quadrature rule to estimate the integral of a function f(x) over an interval [a,b].
- quad_gauss_test
- quad_mesh, a MATLAB code which handles meshes of quadrilaterals over a 2D region;
- quad_mesh_test
- quad_mesh_order1_display, a MATLAB code which plots piecewise constant data associated with a mesh of quadrilaterals;
- quad_mesh_order1_display_test
- quad_mesh_rcm, a MATLAB code which computes the Reverse Cuthill-McKee (RCM) reordering for nodes in a mesh of 4-node quadrilaterals.
- quad_mesh_rcm_test
- quad_monte_carlo, a MATLAB code which interactively uses n random samples to estimate the integral of a function f(x) over an interval [a,b].
- quad_monte_carlo_test
- quad_surface_display, a MATLAB code which plots piecewise bilinear data associated with a quad_surface, that is, a 3D surface defined by a quadrilateral mesh;
- quad_surface_display_test
- quad_trap, a MATLAB code which interactively applies a trapezoidal quadrature rule using n intervals to estimate the integral of a function f(x) over an interval [a,b].
- quad_trap_test
- quad2d_test
- quadmom, a MATLAB code which computes a Gaussian quadrature rule for a weight function rho(x) based on the Golub-Welsch procedure that only requires knowledge of the moments of rho(x).
- quadmom_test
- quadprog_test
- quadrature_golub_welsch, a MATLAB code which computes the points and weights of a Gaussian quadrature rule using the Golub-Welsch procedure.
- quadrature_golub_welsch_test
- quadrature_least_squares, a MATLAB code which computes weights for sub-interpolatory quadrature rules, that is, it estimates integrals by integrating a polynomial that approximates the function data in a least squares sense.
- quadrature_least_squares_test
- quadrature_test
- quadrature_2d_test
- quadrature_weights_vandermonde, a MATLAB code which computes the weights of a quadrature rule using the Vandermonde matrix, assuming that the points have been specified.
- quadrature_weights_vandermonde_test
- quadrature_weights_vandermonde_2d, a MATLAB code which computes the weights of a 2D quadrature rule using the Vandermonde matrix, assuming that the points have been specified.
- quadrature_weights_vandermonde_2d_test
- quadrule, a MATLAB code which defines quadrature rules for approximating an integral;
- quadrule_test
- quadrule_fast, a MATLAB code which rapidly defines certain quadrature rules for approximating an integral;
- quadrule_fast_test
- quality, a MATLAB code which measures the dispersion of pointsets in M dimensions;
- quality_test
- quasiperiodic_ode, a MATLAB code which sets up a system of ordinary differential equations (ODE) for a problem with a quasiperiodic solution.
- quasiperiodic_ode_test
- quaternions, a MATLAB code which carries out some simple arithmetic operations for quaternions.
- quaternions_test
- r8_scale, a MATLAB code which computes the "next" and "previous" real numbers.
- r8_scale_test
- r83, a MATLAB code which contains linear algebra routines for r83 matrices (real, 64 bit, tridiagonal 3xN format).
- r83_test
- r8col, a MATLAB code which contains utility routines for an R8COL, that is, a double precision real MxN array, considered as N column vectors, each of length M. The data may be thought of as a matrix of multiple columns, and many operations will be carried out columnwise.
- r8col_test
- r8crs, a MATLAB code which contains linear algebra routines for R8CRS matrices (real, 64 bit, Compressed Row Storage (CRS) format).
- r8crs_test
- r8ge, a MATLAB code which contains linear algebra routines for R8GE matrices (real, 64 bit, General format).
- r8ge_test
- r8lib, a MATLAB code which contains many utility routines, using double precision real (R8) arithmetic.
- r8lib_test
- r8lt, a MATLAB code which contains linear algebra routines for R8LT matrices (real, 64 bit, Lower Triangular).
- r8lt_test
- r8poly, a MATLAB code which contains a number of utilities for polynomials with R8 coefficients, that is, using double precision or 64 bit real arithmetic.
- r8poly_test
- r8row, a MATLAB code which contains utility routines for an R8ROW, that is, a double precision real MxN array, considered as M row vectors, each of length N. The data may be thought of as a matrix of multiple rows, and many operations will be carried out rowwise.
- r8row_test
- r8st, a MATLAB code which contains linear algebra routines for R8ST matrices (real, 64 bit, Sparse Triplet).
- r8st_test
- r8ut, a MATLAB code which contains linear algebra routines for R8UT matrices (real, 64 bit, Upper Triangular).
- r8ut_test
- random_data, a MATLAB code which uses a random number generator (RNG) to sample points distributed according to various probability density functions (PDF), spatial dimensions, and geometries, including the M-dimensional cube, ellipsoid, simplex and sphere.
- random_data_test
- random_sorted, a MATLAB code which generates vectors of random values which are already sorted.
- random_sorted_test
- random_walk_1d_simulation, a MATLAB code which simulates a random walk in a 1-dimensional region.
- random_walk_1d_simulation_test
- random_walk_2d_avoid_simulation, a MATLAB code which simulates a self-avoiding random walk in a 2-dimensional region.
- random_walk_2d_avoid_simulation_test
- random_walk_2d_simulation, a MATLAB code which simulates a random walk in a 2-dimensional region.
- random_walk_2d_simulation_test
- random_walk_3d_simulation, a MATLAB code which simulates a random walk in a 3-dimensional region.
- random_walk_3d_simulation_test
- ranlib, a MATLAB code which produces random samples from Probability Density Functions (PDF), including Beta, Chi-square Exponential, F, Gamma, Multivariate normal, Noncentral chi-square, Noncentral F, Univariate normal, random permutations, Real uniform, Binomial, Negative Binomial, Multinomial, Poisson and Integer uniform, by Barry Brown and James Lovato.
- ranlib_test
- rbf_interp_1d, a MATLAB code which defines and evaluates radial basis function (RBF) interpolants to 1D data.
- rbf_interp_1d_test
- rbf_interp_2d, a MATLAB code which defines radial basis function (RBF) interpolants to 2D data.
- rbf_interp_2d_test
- rbf_interp_nd, a MATLAB code which defines and evaluates radial basis function (RBF) interpolants to M dimensional data.
- rbf_interp_nd_test
- rcm, a MATLAB code which applies the Reverse Cuthill McKee (RCM) algorithm for reordering the nodes of a graph, and reducing the bandwidth of a corresponding sparse matrix;
- rcm_test
- reactor simulation, a MATLAB code which is a simple Monte Carlo simulation of the shielding effect of a slab of a certain thickness in front of a neutron source. This program was provided as an example with the book "Numerical Methods and Software."
- readmatrix_test, a MATLAB code which calls readmatrix(), a built-in function which reads a data file containing numeric data in columns; it can also skip one or more initial rows, read only a specified set of columns, to avoid dealing with text input.
- readtable_test, a MATLAB code which calls readtable(), a built-in function which reads a data file containing data in columns, with some data being numeric and some text.
- rejection_sample, a MATLAB code which demonstrates acceptance/rejection sampling.
- rejection_sample_test
- ring_data, a MATLAB code which can create, plot, or save data generated by sampling a number of concentric, possibly overlapping rings.
- ring_data_test
- risk_matrix, a MATLAB code which returns the transition and adjacency matrix for the game of RISK.
- risk_matrix_test
- rk12, a MATLAB code which applies Runge-Kutta (RK) solvers of order 1 and 2 to a system of ordinary differential equations (ODE);
- rk12_test
- rk12_adapt, a MATLAB code which defines an adaptive ordinary differential equation (ODE) solver, using Runge-Kutta (RK) solvers of order 1 and 2.
- rk12_adapt_test
- rk23, a MATLAB code which applies Runge-Kutta (RK) solvers of order 2 and 3 to a system of ordinary differential equations (ODE);
- rk23_test
- rk34, a MATLAB code which applies Runge-Kutta (RK) solvers of order 3 and 4 to a system of ordinary differential equations (ODE);
- rk34_test
- rk4, a MATLAB code which applies the fourth order Runge-Kutta (RK) algorithm to estimate the solution of an ordinary differential equation (ODE) at the next time step.
- rk4_test
- rk45, a MATLAB code which applies Runge-Kutta (RK) solvers of order 4 and 5 to a system of ordinary differential equations (ODE);
- rk45_test
- rkf45, a MATLAB code which applies a Runge-Kutta-Fehlberg (RKF) solver to a system of ordinary differential equations (ODE);
- rkf45_test
- rng_cliff, a MATLAB code which computes a sequence of values from the Cliff random number generator (RNG).
- rng_cliff_test
- rnglib, a MATLAB code which implements a random number generator (RNG) with splitting facilities, allowing multiple independent streams to be computed, by L'Ecuyer and Cote.
- rnglib_test
- robertson_ode, an Octave code which sets up a system of three nonlinear stiff ordinary differential equations (ODE) characterizing an autocatalytic chemical reaction.
- robertson_ode_test
- roessler_ode, a MATLAB code which defines the right hand side of the 3D Roessler system of ordinary differential equations (ODE).
- roessler_ode_test
- root_rc, a MATLAB code which seeks a solution of a scalar nonlinear equation f(x)=0, using reverse communication (RC), by Gaston Gonnet.
- root_rc_test
- roots_rc, a MATLAB code which seeks solutions of a system of nonlinear equations, using reverse communication (RC), by Gaston Gonnet.
- roots_rc_test
- rot13, a MATLAB code which can encipher a string using the ROT13 cipher for letters, and the ROT5 cipher for digits.
- rot13_test
- roulette_simulation, a MATLAB code which simulates the spinning of a roulette wheel and the evaluation of certain common roulette bets.
- roulette_simulation_test
- row_echelon_integer, a MATLAB code which carries out the exact computation of the integer row echelon form (IREF) and integer reduced row echelon form (IRREF) of an integer matrix.
- row_echelon_integer_test
- rref_test
- rubber_band_ode, a MATLAB code which defines and solves a set of ordinary differential equations (ODE) describing a mass suspended by a spring and rubber band, which can exhibit chaotic behavior.
- rubber_band_ode_test
- sammon_data, a MATLAB code which generates six M dimensional datasets for cluster analysis.
- sammon_data_test
- satisfy_test
- scip_solution_read, a MATLAB code which reads a file created by the integer programming package SCIP, representing the solution of a polyomino tiling problem, and writes out a simple ASCII file that can be read by load().
- scip_solution_read_test
- sde, a MATLAB code which illustrates properties of stochastic differential equations (SODE), and common algorithms for their analysis, by Desmond Higham;
- sde_test
- search_test
- sequence_streak_display, a MATLAB code which displays a streak plot of a numeric sequence;
- sequence_streak_display_test
- set_theory, a MATLAB code which demonstrates MATLAB commands that implement various set theoretic operations.
- set_theory_test
- sftpack, a MATLAB code which implements the slow Fourier transform (SFT), intended as a teaching tool and comparison with the Fast Fourier Transform (FFT).
- sftpack_test
- shallow_water_1d, a MATLAB code which simulates the evolution of a 1D fluid governed by the time-dependent shallow water equations.
- shallow_water_1d_test
- shallow_water_1d_display, a MATLAB code which can display a solution of the shallow water equations in 1D, generally as computed by the program shallow_water_1d.
- shallow_water_1d_display_test
- shepard_interp_1d, a MATLAB code which defines and evaluates Shepard interpolants to 1D data, based on inverse distance weighting.
- shepard_interp_1d_test
- shepard_interp_2d, a MATLAB code which defines and evaluates Shepard interpolants to 2D data, based on inverse distance weighting.
- shepard_interp_2d_test
- shepard_interp_nd, a MATLAB code which defines and evaluates Shepard interpolants to M dimensional data, based on inverse distance weighting.
- shepard_interp_nd_test
- shoreline, a MATLAB code which tries to identify and triangulate the 2D domain over which some function f(x,y) is nonnegative.
- shoreline_test
- side_by_side_display_test
- simplex_coordinates, a MATLAB code which computes the Cartesian coordinates of the vertices of a regular simplex in M dimensions.
- simplex_coordinates_test
- simplex_gm_rule, a MATLAB code which defines Grundmann-Moeller quadrature rules over the interior of a triangle in 2D, a tetrahedron in 3D, or over the interior of the simplex in M dimensions.
- simplex_gm_rule_test
- simplex_grid, a MATLAB code which generates a regular grid of points over the interior of an arbitrary simplex in M dimensions.
- simplex_grid_test
- simplex_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the interior of the unit simplex in M dimensions.
- simplex_integrals_test
- simplex_monte_carlo, a MATLAB code which uses the Monte Carlo method to estimate an integral over the interior of the unit simplex in M dimensions.
- simplex_monte_carlo_test
- sine_transform, a MATLAB code which demonstrates simple properties of the discrete sine transform (DST).
- sine_transform_test
- single_linkage_test
- sir_ode, a MATLAB code which sets up the ordinary differential equations (ODE) which simulate the spread of a disease using the Susceptible/Infected/Recovered (SIR) model.
- sir_ode_test
- sir_simulation, a MATLAB code which simulates the spread of a disease through a hospital room of M by N beds, using the Susceptible/Infected/Recovered (SIR) model.
- sir_simulation_test
- smolyak_display, a MATLAB code which displays the exactness diagram for a 2D Smolyak sparse grid, by displaying and summing the exactness diagrams for the component product rules.
- smolyak_display_test
- snakes_and_ladders, a MATLAB code which simulates a one-player version of the game of Snakes and Ladders, by Mina Aymin.
- snakes_bar, a MATLAB code which produces bar charts of the count, PDF and CDF estimates for the length of a one-player game of Snakes and Ladders, produced by simulating N games.
- snakes_bar_test
- snakes_histogram, a MATLAB code which produces histograms of the count, PDF and CDF estimates for the length of a one-player game of Snakes and Ladders, produced by simulating N games.
- snakes_histogram_test
- snakes_matrix, a MATLAB code which returns the transition matrix for the game of Snakes and Ladders.
- snakes_matrix_test
- snakes_probability, a MATLAB code which computes the game length probabilities for the game of Snakes and Ladders, by Desmond Higham and Nicholas Higham.
- sobol, a MATLAB code which generates elements of the Sobol M dimensional Quasi Mont Carlo (QMC) sequence, by Bennett Fox.
- sobol_test
- solve, a MATLAB code which demonstrates how Gauss elimination can be used to solve a linear system A*x=b.
- solve_test
- sor, a MATLAB code which implements a simple version of the successive over-relaxation (SOR) method for the iteration solution of a linear system of equations.
- sor_test
- sort_rc, a MATLAB code which can sort a list of any kind of objects, using reverse communication (RC).
- sort_rc_test
- sort_test
- sparse_count, a MATLAB code which is for the analysis and creation of sparse grids in which a single family of 1D quadrature rules is used for all spatial dimensions, for various growth rules.
- sparse_count_test
- sparse_display, a MATLAB code which can read information defining a matrix of numbers and display the sparsity pattern or location of the nonzero elements using gnuplot. This operation is already available in the built-in MATLAB "spy" command.
- sparse_display_test
- sparse_grid_cc, a MATLAB code which creates sparse grids based on Clenshaw-Curtis quadrature rules.
- sparse_grid_cc_test
- sparse_grid_composite, a MATLAB code which creates sparse grids based on 1D composite rules (currently only of order 1).
- sparse_grid_composite_test
- sparse_grid_gl, a MATLAB code which creates sparse grids based on Gauss-Legendre rules.
- sparse_grid_gl_test
- sparse_grid_hermite, a MATLAB code which creates sparse grids based on Gauss-Hermite rules.
- sparse_grid_hermite_test
- sparse_grid_hw, a MATLAB code which creates sparse grids based on Gauss-Legendre, Gauss-Hermite, Gauss-Patterson, or a nested variation of Gauss-Hermite rules, by Florian Heiss and Viktor Winschel.
- sparse_grid_hw_test
- sparse_grid_laguerre, a MATLAB code which creates sparse grids based on Gauss-Laguerre rules.
- sparse_grid_laguerre_test
- sparse_grid_total_poly, a MATLAB code which investigates the efficient approximation of all polynomials up to a given total degree using sparse grids.
- sparse_grid_total_poly_test
- sparse_interp_nd, a MATLAB code which can be used to define a sparse interpolant to a function f(x) of a M dimensional argument.
- sparse_interp_nd_test
- sparse_test
- sphere_cubed_grid, a MATLAB code which uses the projection of a cube to create grids of points, lines, and quadrilaterals on the surface of the unit sphere in 3D.
- sphere_cubed_grid_test
- sphere_cvt, a MATLAB code which carries out the Centroidal Voronoi Tessellation (CVT) iteration on the surface of the unit sphere in 3D.
- sphere_cvt_test
- sphere_delaunay, a MATLAB code which computes the Delaunay triangulation of points on the surface of the unit sphere in 3D.
- sphere_delaunay_test
- sphere_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected from the surface of the unit sphere in 3D.
- sphere_distance_test
- sphere_exactness, a MATLAB code which tests the polynomial exactness of a quadrature rule on the surface of the unit sphere in 3D.
- sphere_exactness_test
- sphere_fibonacci_grid, a MATLAB code which uses a Fibonacci spiral to create a grid of points on the surface of the unit sphere in 3D.
- sphere_fibonacci_grid_test
- sphere_grid, a MATLAB code which provides a number of ways of generating grids of points, or of points and lines, or of points and lines and faces, on the surface of the unit sphere in 3D.
- sphere_grid_test
- sphere_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the surface of the unit sphere in 3D.
- sphere_integrals_test
- sphere_lebedev_rule, a MATLAB code which computes Lebedev quadrature rules on the surface of the unit sphere in 3D.
- sphere_lebedev_rule_test
- sphere_lebedev_rule_display, a MATLAB code which reads a file defining a Lebedev quadrature rule on the surface of the unit sphere in 3D and displays the point locations.
- sphere_lebedev_rule_display_test
- sphere_llq_grid, a MATLAB code which uses longitudes and latitudes to create grids of points, lines, and quadrilaterals on the surface of the unit sphere in 3D.
- sphere_llq_grid_test
- sphere_llt_grid, a MATLAB code which uses longitudes and latitudes to create grids of points, lines, and triangles on the surface of the unit sphere in 3D.
- sphere_llt_grid_test
- sphere_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate the integral of a function on the surface of the unit sphere in 3D.
- sphere_monte_carlo_test
- sphere_ode, a MATLAB code which sets up the ordinary differential equations (ODE) which model motion on the surface of a sphere.
- sphere_ode_test
- sphere_stereograph, a MATLAB code which computes the stereographic mapping between points on the surface of the unit sphere in 3D and points on the plane Z = 1; a generalized mapping is also available.
- sphere_stereograph_test
- sphere_stereograph_display, a MATLAB code which computes and displays the results of several stereographic projections between points on the surface of the unit sphere in 3D and a plane.
- sphere_stereograph_display_test
- sphere_triangle_monte_carlo, a MATLAB code which used the Monte Carlo method to estimate the integral of a function defined in a triangle on the surface of the unit sphere in 3D.
- sphere_triangle_monte_carlo_test
- sphere_triangle_quad, a MATLAB code which uses quadrature to estimate the integral of a function in a spherical triangle on the surface of the unit sphere in 3D.
- sphere_triangle_quad_test
- sphere_voronoi, a MATLAB code which computes the Voronoi diagram of points on the surface of the unit sphere in 3D.
- sphere_voronoi_test
- spherical_harmonic, a MATLAB code which evaluates spherical harmonic functions.
- spherical_harmonic_test
- spinterp, a MATLAB code which carries out piecewise multilinear hierarchical sparse grid interpolation, quadrature and optimization, by Andreas Klimke; an earlier version of this software is ACM TOMS Algorithm 847.
- spinterp_test
- spiral_data, a MATLAB code which computes a velocity vector field that satisfies the continuity equation, writing the data to a file that can be plotted by gnuplot.
- spiral_data_test
- spline, a MATLAB code which interpolates and approximates via splines;
- spline_test
- spquad, a MATLAB code which computes the points and weights of a sparse grid quadrature rule for an M dimensional integral, based on the Clenshaw-Curtis quadrature rule, by Greg von Winckel.
- spquad_test
- square_arbq_rule, a MATLAB code which returns quadrature rules, with exactness up to total degree 20, over the interior of the symmetric square in 2D, by Hong Xiao and Zydrunas Gimbutas.
- square_arbq_rule_test
- square_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected from the interior of the unit square in 2D.
- square_distance_test
- square_exactness, a MATLAB code which investigates the polynomial exactness of quadrature rules for f(x,y) over the interior of a rectangle in 2D.
- square_exactness_test
- square_felippa_rule, a MATLAB code which returns a Felippa quadrature rules for approximating integrals over the interior of a square in 2D.
- square_felippa_rule_test
- square_grid, a MATLAB code which computes a grid of points over the interior of a square in 2D.
- square_grid_test
- square_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the interior of the unit square or symmetric unit square in 2D.
- square_integrals_test
- square_minimal_rule, a MATLAB code which returns "almost minimal" quadrature rules, with exactness up to total degree 55, over the interior of the symmetric square in 2D, by Mattia Festa and Alvise Sommariva.
- square_minimal_rule_test
- square_monte_carlo, a MATLAB code which applies a Monte Carlo method to estimate the integral of a function over the interior of the unit square in 2D.
- square_monte_carlo_test
- square_symq_rule, a MATLAB code which returns symmetric quadrature rules, with exactness up to total degree 20, over the interior of the symmetric square in 2D, by Hong Xiao and Zydrunas Gimbutas.
- square_symq_rule_test
- st_io, a MATLAB code which reads and writes sparse linear systems stored in the Sparse Triplet (ST) format.
- st_io_test
- st_to_ccs, a MATLAB code which converts sparse matrix data from Sparse Triplet (ST) format to Compressed Column Storage (CCS) format;
- st_to_ccs_test
- st_to_hb, a MATLAB code which converts a sparse matrix file from Sparse Triplet (ST) format to Harwell Boeing (HB) format;
- st_to_hb_test
- st_to_mm, a MATLAB code which converts a sparse matrix file from Sparse Triplet (ST) format to Matrix Market (MM) format;
- st_to_mm_test
- st_to_msm, a MATLAB code which reads a Sparse Triplet (ST) file and creates a corresponding MATLAB Sparse Matrix.
- st_to_msm_test
- stiff_ode, a MATLAB code which considers an ordinary differential equation (ODE) which is an example of a stiff ODE.
- stiff_ode_test
- stla_display, a MATLAB code which displays an ASCII stereolithography (STL) 3D graphics file;
- stla_display_test
- stla_io, a MATLAB code which reads and writes an ASCII stereolithography (STL) 3D graphics file;
- stla_io_test
- stla_to_tri_surface, a MATLAB code which reads an ASCII stereolithography (STL) 3D graphics file and extracts the surface mesh data as a tri_surface dataset.
- stla_to_tri_surface_test
- stla_to_tri_surface_fast, a MATLAB code which is a faster version of stla_to_tri_surface.
- stla_to_tri_surface_fast_test
- stochastic_diffusion, functions which implement several versions of a stochastic diffusivity coefficient.
- stochastic_diffusion_test
- stochastic_heat2d, a MATLAB code which implements a finite difference method (FDM) for the steady (time independent) 2D heat equation, with a stochastic heat diffusivity coefficient.
- stochastic_heat2d_test
- stochastic_rk, a MATLAB code which applies a Runge-Kutta (RK) scheme to approximate the solution of a stochastic ordinary differential equation (SODE).
- stochastic_rk_test
- stokes_2d_exact, a MATLAB code which evaluates exact solutions to the incompressible steady Stokes equations over the unit square in 2D.
- stokes_2d_exact_test
- string_ode, a MATLAB code which simulates the behavior of a vibrating string by solving the corresponding initial boundary value problem (IBVP).
- string_ode_test
- stroud, a MATLAB code which defines quadrature rules for a variety of M-dimensional regions, including the interior of the square, cube and hypercube, the pyramid, cone and ellipse, the hexagon, the M-dimensional octahedron, the circle, sphere and hypersphere, the triangle, tetrahedron and simplex, and the surface of the circle, sphere and hypersphere.
- stroud_test
- subpak, a MATLAB code which includes many utility routines;
- subpak_test
- subset, a MATLAB code which enumerates, generates, randomizes, ranks and unranks combinatorial objects including combinations, compositions, Gray codes, index sets, partitions, permutations, polynomials, subsets, and Young tables. Backtracking routines are included to solve some combinatorial problems.
- subset_test
- subset_sum, a MATLAB code which seeks solutions of the subset sum problem.
- subset_sum_test
- subset_sum_brute, a MATLAB code which seeks solutions of the subset sum problem, using a brute force approach.
- subset_sum_brute_test
- sudoku, a MATLAB code which handles Sudoku puzzles;
- sudoku_test
- superlu_test
- surf_test
- svd_basis, a MATLAB code which applies the singular value decomposition (SVD) to a collection of data vectors, extracting dominant modes;
- svd_basis_test
- svd_circle, a MATLAB code which analyzes a linear map of the unit circle caused by an arbitrary 2x2 matrix A, using the singular value decomposition.
- svd_circle_test
- svd_faces, a MATLAB code which applies singular value decomposition (SVD) analysis to a set of images.
- svd_faces_test
- svd_fingerprint, a MATLAB code which reads a file containing a fingerprint image and uses the singular value decomposition (SVD) to compute and display a series of low rank approximations to the image.
- svd_fingerprint_test
- svd_gray, a MATLAB code which reads a gray scale image, computes the Singular Value Decomposition (SVD), and constructs a series of low rank approximations to the image.
- svd_gray_test
- svd_lls, a MATLAB code which uses the singular value decomposition (SVD) to construct and plot the best affine and linear relationships in the sense of least square, between two vectors of data.
- svd_lls_test
- svd_powers, a MATLAB code which applies singular value decomposition (SVD) analysis to a set of powers x(i)^(j-1).
- svd_powers_test
- svd_snowfall, a MATLAB code which reads a file containing historical snowfall data and analyzes the data with the Singular Value Decomposition (SVD).
- svd_snowfall_test
- svd_sphere, a MATLAB code which analyzes a linear map of the unit sphere caused by an arbitrary 3x3 matrix A, using the singular value decomposition.
- svd_sphere_test
- svd_test
- svd_truncated_test
- table_io, a MATLAB code which reads and writes a simple table file;
- table_io_test
- task_division, a MATLAB code which implements a simple procedure for smoothly dividing T tasks among P processors; such a method can be useful in MPI and other parallel environments, particularly when T is not an exact multiple of P, and when the processors can be indexed starting from 0 or from 1.
- task_division_test
- tensor_grid_display, a MATLAB code which can display the grid points of a tensor product rule used for interpolation or quadrature, in 1D, 2D or 3D.
- tensor_grid_display_test
- test_approx, a MATLAB code which implements test problems for approximation, provided as a set of (x,y) data.
- test_approx_test
- test_con, a MATLAB code which implements test problems for numerical continuation.
- test_con_test
- test_eigen, a MATLAB code which implements test matrices for eigenvalue analysis.
- test_eigen_test
- test_int, a MATLAB code which implements test problems for approximate integration (quadrature) in one dimension.
- test_int_test
- test_int_2d, a MATLAB code which implements test problems for approximate integration (quadrature) in two dimensions.
- test_int_2d_test
- test_interp, a MATLAB code which defines test problems for interpolation, provided as a set of (x,y(x)) data.
- test_interp_test
- test_interp_1d, a MATLAB code which defines test problems for interpolation of data y(x), which depends on a 1D argument.
- test_interp_1d_test
- test_interp_2d, a MATLAB code which defines test problems for interpolation of data z(x,y), which depends on a 2D argument.
- test_interp_2d_test
- test_interp_fun, a MATLAB code which defines test problems for interpolation which are available in functional form.
- test_interp_fun_test
- test_interp_nd, a MATLAB code which defines test problems for interpolation of data z(x), depending on an M dimensional argument.
- test_interp_nd_test
- test_lls, a MATLAB code which implements linear least squares (LLS) test problems of the form A*x=b.
- test_lls_test
- test_mat, a MATLAB code which defines test matrices for which some of the determinant, eigenvalues, inverse, null vectors, P*L*U factorization or linear system solution are already known, including the Vandermonde and Wathen matrix.
- test_mat_test
- test_matrix_exponential, a MATLAB code which defines a set of test cases for computing the matrix exponential.
- test_matrix_exponential_test
- test_min, a MATLAB code which implements test problems for minimization of a scalar function of a scalar variable.
- test_min_test
- test_nearest, a MATLAB code which tests the time complexity of various procedures for solving the nearest neighbor problem.
- test_nearest_test
- test_nint, a MATLAB code which implements test problems for approximate integration (quadrature) in M dimensions.
- test_nint_test
- test_opt, a MATLAB code which implements test problems for optimization of a scalar function of several variables.
- test_opt_test
- test_opt_con, a MATLAB code which defines test problems for the minimization of a scalar function of several variables, with the search constrained to lie within a specified hyper-rectangle.
- test_opt_con_test
- test_optimization, a MATLAB code which implements test problems for optimization of a scalar function of several variables, as described by Molga and Smutnicki.
- test_optimization_test
- test_partial_digest, a MATLAB code which can generate example cases of the partial digest problem.
- test_partial_digest_test
- test_triangle_integrals, a MATLAB code which defines tests involving the integration of an integrand function over some specific triangle, not necessarily the unit triangle.
- test_triangle_integrals_test
- test_triangulation, a MATLAB code which defines test problems for triangulation;
- test_triangulation_test
- test_values, a MATLAB code which returns selected values of some special functions;
- test_values_test
- test_zero, a MATLAB code which defines some functions f(x) suitable for testing software that solves f(x)=0;
- test_zero_test
- tester, a BASH script which runs the MATLAB test codes.
- tet_mesh, a MATLAB code which works with tetrahedral meshes in 3D;
- tet_mesh_test
- tet_mesh_boundary, a MATLAB code which reads information defining a tetrahedral mesh of points in 3D, and determines the triangular faces that form the boundary of the mesh; it writes out files containing the nodes and elements defining this TRI_SURFACE data.
- tet_mesh_boundary_test
- tet_mesh_display, a MATLAB code which reads data defining a (small) tetrahedral mesh, and displays a wireframe image of the nodes and edges;
- tet_mesh_display_test
- tet_mesh_l2q, a MATLAB code which reads information about a 4-node (linear) tetrahedral mesh and creates data defining a corresponding 10-node (quadratic) tetrahedral mesh;
- tet_mesh_l2q_test
- tet_mesh_q2l, a MATLAB code which reads information about a 10-node (quadratic) tet mesh and creates data defining a corresponding 4-node (linear) tetrahedral mesh;
- tet_mesh_q2l_test
- tet_mesh_quad, a MATLAB code which estimates the integral of a function over a region defined by a tetrahedral mesh.
- tet_mesh_quad_test
- tet_mesh_quality, a MATLAB code which computes various quality measures for a tetrahedral mesh of a set of nodes in 3D;
- tet_mesh_quality_test
- tet_mesh_rcm, a MATLAB code which computes the Reverse Cuthill McKee (RCM) reordering for the nodes of a tetrahedral mesh that uses 4-node or 10-node tetrahedrons;
- tet_mesh_rcm_test
- tet_mesh_refine, a MATLAB code which refines a tetrahedral mesh;
- tet_mesh_refine_test
- tet_mesh_tet_neighbors, a MATLAB code which reads information about a tetrahedral mesh and writes out a list of the tetrahedrons adjacent to a given tetrahedron;
- tet_mesh_tet_neighbors_test
- tet_mesh_to_gmsh, a MATLAB code which write a Gmsh file describing a tetrahedral mesh;
- tet_mesh_to_gmsh_test
- tet_mesh_to_xml, a MATLAB code which write an XML file describing a tetrahedral mesh;
- tet_mesh_to_xml_test
- tet_mesh_volumes, a MATLAB code which computes the volume of each tetrahedron in a tetrahedral mesh;
- tet_mesh_volumes_test
- tetrahedron_arbq_rule, a MATLAB code which returns quadrature rules, with exactness up to total degree 15, over the interior of a tetrahedron in 3D, by Hong Xiao and Zydrunas Gimbutas.
- tetrahedron_arbq_rule_test
- tetrahedron_exactness, a MATLAB code which tests the polynomial exactness of a quadrature rule over the interior of a tetrahedron in 3D.
- tetrahedron_exactness_test
- tetrahedron_felippa_rule, a MATLAB code which returns a Felippa quadrature rules for approximating integrals over the interior of a tetrahedron in 3D.
- tetrahedron_felippa_rule_test
- tetrahedron_grid, a MATLAB code which computes a grid of points over the interior of a tetrahedron in 3D.
- tetrahedron_grid_test
- tetrahedron_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the interior of the unit tetrahedron in 3D.
- tetrahedron_integrals_test
- tetrahedron_keast_rule, a MATLAB code which defines ten quadrature rules, of degree of exactness 0 through 8, over the interior of the tetrahedron in 3D.
- tetrahedron_keast_rule_test
- tetrahedron_monte_carlo, a MATLAB code which uses the Monte Carlo method to estimate an integral over the interior of a general tetrahedron in 3D.
- tetrahedron_monte_carlo_test
- tetrahedron_ncc_rule, a MATLAB code which defines Newton-Cotes closed (NCC) quadrature rules over the interior of a tetrahedron in 3D.
- tetrahedron_ncc_rule_test
- tetrahedron_nco_rule, a MATLAB code which defines Newton-Cotes open (NCO) quadrature rules over the interior of a tetrahedron in 3D.
- tetrahedron_nco_rule_test
- tetrahedron_properties, a MATLAB code which computes properties, including the centroid, circumsphere, dihedral angles, edge lengths, face angles, face areas, insphere, quality, solid angles, and volume for a tetrahedron in 3D.
- tetrahedron_properties_test
- tetrahedron_slice_animate, a MATLAB code which is given a tetrahedron and a vector, and displays an evenly spaced sequence of planes that intersect the tetrahedron and are normal to the vector.
- tetrahedron_slice_display, a MATLAB code which determines the intersection between a tetrahedron and a plane and displays the result.
- tetrahedron_slice_display_test
- tetrahedron01_monte_carlo, a MATLAB code which uses the Monte Carlo method to estimate an integral over the interior of the unit tetrahedron in 3D.
- tetrahedron01_monte_carlo_test
- theodolite, a MATLAB code which presents the problem of estimating the location of an event which occurs in the sky, atmosphere, or the heavens, using nothing but the reported angle of observation from several stations; a nonlinear least squares (NLS) solver is needed.
- theodolite_test
- three_body_ode, a MATLAB code which defines ordinary differential equations (ODE) that simulate the behavior of three planets, constrained to lie in a plane, and moving under the influence of gravity, by Walter Gander and Jiri Hrebicek.
- three_body_ode_test
- tic_toc_test
- timer_test
- timestamp, a MATLAB code which prints the current YMDHMS date as a timestamp;
- timestamp_test
- toeplitz_cholesky, a MATLAB code which computes the Cholesky factorization of a nonnegative definite symmetric Toeplitz matrix.
- toeplitz_cholesky_test
- toeplitz_inverse, a MATLAB code which computes the inverse of a Toeplitz matrix.
- toeplitz_inverse_test
- toms097, a MATLAB code which computes the distance between all pairs of nodes in a directed graph with weighted edges, using the Floyd algorithm. This is a version of ACM TOMS algorithm 97.
- toms097_test
- toms112, a MATLAB code which determines whether a point is contained in a polygon, by Moshe Shimrat. This is a version of ACM TOMS algorithm 112.
- toms112_test
- toms178, a MATLAB code which seeks the minimizer of a scalar function of several variables using the Hooke-Jeeves method, by Arthur Kaupe. This is a version of ACM TOMS algorithm 178.
- toms178_test
- toms179, a MATLAB code which calculates the incomplete Beta ratio, by Oliver Ludwig. This is a version of ACM TOMS algorithm 179.
- toms179_test
- toms243, a MATLAB code which evaluates the logarithm of a complex value, by David Collens. This is a version of ACM TOMS algorithm 243.
- toms243_test
- toms291, a MATLAB code which approximates the logarithm of the Gamma function. This is a version of ACM TOMS algorithm 291.
- toms291_test
- toms443, a MATLAB code which evaluates the Lambert W function. This is a version of ACM TOMS algorithm 443.
- toms443_test
- toms446, a MATLAB code which manipulates Chebyshev series for interpolation and approximation, by Roger Broucke. This is a version of ACM TOMS algorithm 446.
- toms446_test
- toms462, a MATLAB code which evaluates the upper right tail of the bivariate normal distribution; that is, the probability that normal variables X and Y with correlation R will satisfy H <= X and K <= Y. This is a version of ACM TOMS algorithm 462.
- toms462_test
- toms515, a MATLAB code which can select subsets of size K from a set of size N, This is a version of ACM TOMS Algorithm 515, by Bill Buckles, Matthew Lybanon.
- toms515_test
- toms577, a MATLAB code which evaluates the Carlson elliptic integral functions RC, RD, RF and RJ. This is a version of ACM TOMS algorithm 577.
- toms577_test
- toms655, a MATLAB code which computes the weights for interpolatory quadrature rule; this library is commonly called IQPACK, by Sylvan Elhay and Jaroslav Kautsky. This is a version of ACM TOMS algorithm 655.
- toms655_test
- toms743, a MATLAB code which evaluates the Lambert W function. This is a version of ACM TOMS algorithm 743, by Barry, Barry and Culligan-Hensley.
- toms743_test
- toms847, a MATLAB code which carries out piecewise multilinear hierarchical sparse grid interpolation, commonly known as SPINTERP, by Andreas Klimke. This is a version of ACM TOMS Algorithm 847.
- toms847_test
- toms886, a MATLAB code which defines the Padua points for interpolation in a 2D region, including the rectangle, triangle, and ellipse, by Marco Caliari, Stefano de Marchi, Marco Vianello. This is a version of ACM TOMS algorithm 886.
- toms886_test
- toms923, a MATLAB code which evaluates the Pfaffian for a dense or banded skew symmetric matrix, by Michael Wimmer.
- toms923_test
- traffic_simulation, a MATLAB code which simulates the cars waiting to get through a traffic light.
- traffic_simulation_test
- tri_surface_display, a MATLAB code which displays a triangulated surface;
- tri_surface_display_test
- tri_surface_io, a MATLAB code which reads and writes the 3D graphics information in a tri_surface file;
- tri_surface_io_test
- tri_surface_to_obj, a MATLAB code which reads a tri_surface dataset and extracts the surface mesh data as an OBJ file.
- tri_surface_to_obj_test
- tri_surface_to_stla, a MATLAB code which reads a tri_surface dataset and extracts the surface mesh data as an ASCII stereolithography (STL) file.
- tri_surface_to_stla_test
- triangle_analyze, a MATLAB code which reads a triangle defined in a file, and uses the TRIANGLE_PROPERTIES library to compute angles, area, centroid, circumcircle, edge lengths, incircle, orientation, orthocenter, and quality.
- triangle_analyze_test
- triangle_display, a MATLAB code which displays the nodes and elements of a triangulation on the MATLAB graphics screen, assuming the data has been stored in NODE and ELE files by the triangle() program.
- triangle_display_test
- triangle_distance, a MATLAB code which considers the problem of describing the typical value of the distance between a pair of points randomly selected from the interior of a triangle in 2D.
- triangle_distance_test
- triangle_dunavant_rule, a MATLAB code which defines Dunavant quadrature rules over the interior of a triangle in 2D.
- triangle_dunavant_rule_test
- triangle_exactness, a MATLAB code which tests the polynomial exactness of a quadrature rule over the interior of a triangle in 2D.
- triangle_exactness_test
- triangle_fekete_rule, a MATLAB code which sets up one of seven Fekete rules for interpolation or quadrature over the interior of a triangle in 2D.
- triangle_fekete_rule_test
- triangle_felippa_rule, a MATLAB code which returns a Felippa quadrature rules for approximating integrals over the interior of a triangle in 2D.
- triangle_felippa_rule_test
- triangle_grid, a MATLAB code which computes a grid of points over the interior of a triangle in 2D.
- triangle_grid_test
- triangle_histogram, a MATLAB code which computes histograms of data over the interior of a unit triangle in 2D.
- triangle_histogram_test
- triangle_integrals, a MATLAB code which returns the exact value of the integral of any polynomial over the interior of an arbitrary triangle in 2D.
- triangle_integrals_test
- triangle_interpolate, a MATLAB code which shows how vertex data can be interpolated at any point in the interior of a triangle.
- triangle_interpolate_test
- triangle_io, a MATLAB code which can read or write some of the files created by Jonathan Shewchuk's triangle program.
- triangle_io_test
- triangle_lyness_rule, a MATLAB code which returns Lyness-Jespersen quadrature rules over the interior of a triangle in 2D;
- triangle_lyness_rule_test
- triangle_monte_carlo, a MATLAB code which uses the Monte Carlo method to estimate an integral over the interior of a general triangle in 2D.
- triangle_monte_carlo_test
- triangle_ncc_rule, a MATLAB code which defines Newton-Cotes closed (NCC) quadrature rules over the interior of a triangle in 2D.
- triangle_ncc_rule_test
- triangle_nco_rule, a MATLAB code which defines Newton-Cotes open (NCO) quadrature rules over the interior of a triangle in 2D.
- triangle_nco_rule_test
- triangle_properties, a MATLAB code which computes properties, including angles, area, centroid, circumcircle, edge lengths, incircle, orientation, orthocenter, and quality, of a triangle in 2D.
- triangle_properties_test
- triangle_svg, a MATLAB code which uses Scalable Vector Graphics (SVG) to plot a triangle and any number of points, to illustrate quadrature rules and sampling techniques.
- triangle_svg_test
- triangle_symq_rule, a MATLAB code which returns efficient symmetric quadrature rules, with exactness up to total degree 50, over the interior of a triangle in 2D, by Hong Xiao and Zydrunas Gimbutas.
- triangle_symq_rule_test
- triangle_to_fem, a MATLAB code which reads the NODE and ELE files created by the triangle program to describe a triangular mesh, and writes a corresponding pair of node and element files in the 2D FEM format.
- triangle_to_fem_test
- triangle_to_xml, a MATLAB code which reads the NODE and ELE files created by triangle() to describe a triangular mesh in 2D, and writes out a corresponding XML mesh file for use by DOLFIN or FENICS.
- triangle_to_xml_test
- triangle_twb_rule, a MATLAB code which generates the points and weights of quadrature rules over the interior of a triangle in 2D, determined by Taylor, Wingate, and Bos.
- triangle_twb_rule_test
- triangle_wandzura_rule, a MATLAB code which returns quadrature rules of exactness 5, 10, 15, 20, 25 and 30 over the interior of the triangle in 2D.
- triangle_wandzura_rule_test
- triangle01_integrals, a MATLAB code which returns the integral of any monomial over the interior of the unit triangle in 2D.
- triangle01_integrals_test
- triangle01_monte_carlo, a MATLAB code which uses the Monte Carlo method to estimate an integral over the interior of the unit triangle in 2D.
- triangle01_monte_carlo_test-
- triangulate, a MATLAB code which triangulates a polygonal region, based on a C program by Joseph ORourke;
- triangulate_test
- triangulate_rectangle, a MATLAB code which sets up a grid of triangles in a rectangular region.
- triangulate_rectangle_test
- triangulation, a MATLAB code which computes the triangulation of a set of points in the plane, and performs various operations using a triangulation, including searching a Delaunay triangulation to find which triangle contains a given point.
- triangulation_test
- triangulation_boundary_edges, a MATLAB code which reads data defining a triangulation, determines which edges lie on the boundary, organizes them into connected components, and writes this information to a file.
- triangulation_boundary_edges_test
- triangulation_boundary_nodes, a MATLAB code which reads data defining a triangulation, determines which nodes lie on the boundary, and writes their coordinates to a file;
- triangulation_boundary_nodes_test
- triangulation_corner, a MATLAB code which modifies triangulations in which one or more triangles have more than one boundary edge.
- triangulation_corner_test
- triangulation_delaunay_discrepancy, a MATLAB code which measures the amount by which a triangulation fails the local Delaunay test;
- triangulation_delaunay_discrepancy_test triangulation_display, a MATLAB code which displays the nodes and elements of a triangulation on the MATLAB graphics screen;
- triangulation_display_test
- triangulation_histogram, a MATLAB code which computes histograms of data over a triangulation.
- triangulation_histogram_test
- triangulation_l2q, a MATLAB code which reads information about a 3-node (linear) triangulation and creates data defining a corresponding 6-node (quadratic) triangulation;
- triangulation_l2q_test
- triangulation_mask, a MATLAB code which reads a triangulation and calls a user-supplied routine to consider each triangle for deletion;
- triangulation_mask_test
- triangulation_node_to_element, a MATLAB code which reads files describing a set of nodes, their triangulation, and the value of one or more quantities at each node, and outputs a file that averages the quantities for each element. This operation in effect creates an order1 finite element model of the data.
- triangulation_node_to_element_test
- triangulation_order1_display, a MATLAB code which plots piecewise constant data associated with a triangulation;
- triangulation_order1_display_test
- triangulation_order3_contour, a MATLAB code which plots color contours of a scalar quantity evaluated at the nodes of a 3-node triangle triangulation.
- triangulation_order3_contour_test
- triangulation_order6_contour, a MATLAB code which plots color contours of a scalar quantity evaluated at the nodes of a 6-node triangle triangulation.
- triangulation_order6_contour_test
- triangulation_orient, a MATLAB code which ensures that the triangles in an order 3 or order 6 triangulation have positive orientation;
- triangulation_orient_test
- triangulation_plot, a MATLAB code which plots the nodes and elements of a triangulation as a PostScript file;
- triangulation_plot_test
- triangulation_q2l, a MATLAB code which reads information about a 6-node triangulation and creates data defining a corresponding 3-node triangulation;
- triangulation_q2l_test
- triangulation_quad, a MATLAB code which reads information about a triangulation and the value of a function at the nodes and estimates the integral of the function over the triangulated region.
- triangulation_quad_test
- triangulation_quality, a MATLAB code which reads information about a triangulation and computes various quality measures;
- triangulation_quality_test
- triangulation_rcm, a MATLAB code which computes the Reverse Cuthill McKee (RCM) reordering for the nodes of a triangulation that uses 3-node or 6-node triangles;
- triangulation_rcm_test
- triangulation_refine, a MATLAB code which refines a triangulation;
- triangulation_refine_test
- triangulation_refine_local, a MATLAB code which refines a triangulation locally; a single triangular element is replaced by four smaller triangles, and neighboring information is updated.
- triangulation_refine_local_test
- triangulation_svg, a MATLAB code which creates an SVG image of a triangulation, which can be displayed by a web browser.
- triangulation_svg_test
- triangulation_t3_to_t4, a MATLAB code which reads information about a 3-node T3 triangulation and creates data defining a corresponding 4-node T4 triangulation;
- triangulation_t3_to_t4_test
- triangulation_triangle_neighbors, a MATLAB code which reads data defining a triangulation, finds the three neighbor triangles for each triangle, and writes them to a file;
- triangulation_triangle_neighbors_test
- tridiagonal_solver, a MATLAB code which solves a tridiagonal linear system.
- tridiagonal_solver_test
- trig_interp, a MATLAB code which can be used for trigonometric interpolation.
- trig_interp_test
- truel_simulation, a MATLAB code which simulates N repetitions of a duel between three players, each of whom has a known firing accuracy.
- truel_simulation_test
- truncated_normal, a MATLAB code which works with the truncated normal distribution over [a,b], or [A,+oo) or (-oo,B], returning the probability density function (PDF), the cumulative density function (CDF), the inverse CDF, the mean, the variance, and sample values.
- truncated_normal_test
- truncated_normal_rule, a MATLAB code which computes a quadrature rule for a normal probability density function (PDF), sometimes called a Gaussian distribution, that has been truncated to [A,+oo), (-oo,B] or [a,b].
- truncated_normal_rule_test
- truncated_normal_sparse_grid, a MATLAB code which computes a sparse grid based on a normal probability density function (PDF), also called a Gaussian distribution, that has been truncated to [a,+oo), (-oo,b] or [a,b].
- truncated_normal_sparse_grid_test
- tsp_brute, a MATLAB code which reads a file of city-to-city distances and solves a (small!) traveling salesperson problem (TSP), using brute force.
- tsp_brute_test
- tsp_descent, a MATLAB code which reads a file of city-to-city distances, choose an initial tour at random, and then tries some simple variations to quickly find a tour of lower length.
- tsp_descent_test
- tsp_greedy, a MATLAB code which reads a file of city-to-city distances, picks a starting city, and then successively visits the nearest unvisited city.
- tsp_greedy_test
- tsp_random, a MATLAB code which reads a file of city-to-city distances, and then randomly samples a number of possible tours, to quickly seek a tour of lower length.
- tsp_random_test
- two_body_ode, a MATLAB code which defines ordinary differential equations (ODE) which simulate the behavior of two bodies, constrained to lie in a plane, moving under the influence of gravity, with one body much more massive than the other.
- two_body_ode_test
- ubvec, a MATLAB code which demonstrates how nonnegative integers can be stored as unsigned binary vectors, and arithmetic can be performed on them.
- ubvec_test
- unicycle, a MATLAB code which considers permutations containing a single cycle, sometimes called cyclic permutations.
- unicycle_test
- uniform, a MATLAB code which implements a uniform random number generator (RNG) for a variety of arithmetic types.
- uniform_test
- upc, is a library which can compute the check digit associated with a uniform product code (UPC), or it can report whether a 12-digit UPC is actually valid.
- upc_test
- urn_simulation, a MATLAB code which simulates the experiment of sampling K balls from an urn containing N balls of various colors.
- urn_simulation_test
- usa_cvt_geo, MATLAB codes which explore the creation of a centroidal Voronoi Tessellation (CVT) of the continental United States, based solely on geometric considerations.
- usa_cvt_geo_test
- van_der_corput, a MATLAB code which computes elements of the van der Corput 1-dimensional Quasi Mont Carlo (QMC) sequence, using a simple interface.
- van_der_corput_test
- vandermonde, a MATLAB code which implements the Bjork-Pereyra algorithm for accurate solution of linear systems involving the Vandermonde matrix.
- vandermonde_test
- vandermonde_approx_1d, a MATLAB code which finds a polynomial approximant to data y(x) of a 1D argument by setting up and solving an overdetermined linear system for the polynomial coefficients involving the Vandermonde matrix.
- vandermonde_approx_1d_test
- vandermonde_approx_2d, a MATLAB code which finds a polynomial approximant p(x,y) to data z(x,y) of a 2D argument by setting up and solving an overdetermined linear system for the polynomial coefficients involving the Vandermonde matrix.
- vandermonde_approx_2d_test
- vandermonde_interp_1d, a MATLAB code which finds a polynomial interpolant to data y(x) of a 1D argument by solving a linear system for the polynomial coefficients involving the Vandermonde matrix.
- vandermonde_interp_1d_test
- vandermonde_interp_2d, a MATLAB code which finds a polynomial interpolant to data z(x,y) of a 2D argument by solving a linear system for the polynomial coefficients involving the Vandermonde matrix.
- vandermonde_interp_2d_test
- voronoi_city, a MATLAB code which displays the steps involved in computing the Voronoi diagram of 3 points, which we think of as cities connected by roads.
- voronoi_city_test
- voronoi_display, a MATLAB code which computes the exact Voronoi diagram using geompack, and displays it.
- voronoi_display_test
- voronoi_mountains, a MATLAB code which makes a mountain plot of a Voronoi diagram, that is, a surface plot of the distance from each point to its nearest Voronoi generator.
- voronoi_mountains_test
- voronoi_neighbors, a MATLAB code which is given a set of points in the plane and determines the Voronoi adjacency structure, that is, which points share an edge of the Voronoi diagram.
- voronoi_neighbors_test
- voronoi_plot, a MATLAB code which estimates the Voronoi neighborhoods of points using sampling, and with a distance based on the L1, L2, LInfinity or arbitrary LP norms;
- voronoi_plot_test
- voronoi_test
- vpa_test
- walker_sample, a MATLAB code which efficiently samples a discrete probability vector using Walker sampling.
- walker_sample_test
- walsh, a MATLAB code which implements versions of the Walsh and Haar transforms.
- walsh_test
- wathen, a MATLAB code which compares storage schemes (full, banded, sparse triplet, sparse) and solution strategies (A\x, Linpack, conjugate gradient) for linear systems involving the Wathen matrix, which can arise when solving a problem using the finite element method (FEM).
- wathen_test
- wavelet, a MATLAB code which does some simple wavelet calculations;
- wavelet_test
- wedge_exactness, a MATLAB code which investigates the polynomial exactness of a quadrature rule over the interior of the unit wedge in 3D.
- wedge_exactness_test
- wedge_felippa_rule, a MATLAB code which returns quadrature rules for approximating integrals over the interior of the unit wedge in 3D.
- wedge_felippa_rule_test
- wedge_grid, a MATLAB code which computes a grid of points over the interior of the unit wedge in 3D.
- wedge_grid_test
- wedge_integrals, a MATLAB code which returns the exact value of the integral of any monomial over the interior of the unit wedge in 3D.
- wedge_integrals_test
- wedge_monte_carlo, a MATLAB code which uses the Monte Carlo method to estimate an integral over the interior of the unit wedge in 3D.
- wedge_monte_carlo_test
- weekday, a MATLAB code which determines the day of the week corresponding to a given date, such as 14 October 1066, Julian calendar, ... which was a Saturday.
- weekday_test
- weekday_zeller, a MATLAB code which uses the Zeller congruence to determine the day of the week corresponding to a given date, such as 13 July 1989, Gregorian calendar, ... which was a Thursday.
- weekday_zeller_test
- will_you_be_alive, a MATLAB code which carries out the probability simulations described in "Will You Be Alive 10 Years From Now?" by Paul Nahin;
- will_you_be_alive_test
- wishart, a MATLAB code which produces sample matrices from the Wishart or Bartlett distributions, useful for sampling random covariance matrices.
- wishart_test
- wtime, a MATLAB code which returns a reading of the wall clock time in seconds.
- wtime_test
- xml2struct, a MATLAB code which reads a file containing XML data, and produces a corresponding MATLAB struct.
- xml2struct_test
- zero_rc, a MATLAB code which seeks a solution of a scalar nonlinear equation f(x)=0, using reverse communication (RC), by Richard Brent.
- zero_rc_test
- ziggurat, a MATLAB code which implements uniform, normal and exponential random number generators (RNG) using the ziggurat method, by Marsaglia and Tsang.
- ziggurat_test
- zombie_ode, a MATLAB code which sets up a system of ordinary differential equations (ODE) for a generalized Susceptible-Infected-Recovered (SIR) disease model to simulate a zombie attack, developed by Philip Munz.
- zombie_ode_test