fem2d_sample, an Octave code which evaluates a finite element function of a 2D argument.
The current version of the program can only handle finite element meshes which are made of piecewise linear triangles of order 3 or 6.
fem2d_sample ( 'fem_prefix', 'sample_prefix' )where 'fem_prefix' is the common prefix for the FEM files:
The computer code and data files described and made available on this web page are distributed under the MIT license
fem2d_sample is available in a C++ version and a Fortran90 version and a MATLAB version and an Octave version.
fem1d_sample, an Octave code which samples a scalar or vector finite element function of one variable, defined by FEM files, returning interpolated values at the sample points.
fem2d, a data directory which contains examples of 2D FEM files, text files that describe a 2D finite element geometry and associated nodal values;
fem2d_heat, an Octave code which solves the 2D time dependent heat equation on the unit square.
fem2d_pack, an Octave code which is useful for 2D finite element calculations.
fem2d_project, an Octave code which projects a function F(X,Y) into a given finite element space of piecewise linear triangular elements.
fem3d_sample, an Octave code which evaluates a finite element function defined on 3D tetrahedral mesh.
histogram_data_2d_sample, an Octave code which demonstrates how to construct a Probability Density Function (PDF) from a frequency table over a 2D domain, and then to use that PDF to create new samples.
histogram_pdf_2d_sample, an Octave 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.
rejection_sample, an Octave code which demonstrates acceptance/rejection sampling.