fem1d_sample_test, a FORTRAN90 code which calls fem1d_sample(), which can evaluate a finite element function of a 1D argument.
The computer code and data files described and made available on this web page are distributed under the MIT license
fem1d_sample, a FORTRAN90 code which samples a scalar or vector function of one variable, modeled by the finite element method (FEM), and returns interpolated values at sample points.
P1 is FEM data for the vector function f(x)=[ 1, x, x^2], on a grid of 11 evenly spaced nodes from -5 to 5, using piecewise constant basis functions.
P2 is FEM data for the vector function f(x)=[ 1, x, x^2], on a grid of 11 evenly spaced nodes from -5 to 5, using piecewise linear basis functions.