string_pde, a C++ code which sets up and solves the partial differential equations (PDE) describing a vibrating string, creating files that can be displayed by gnuplot().
The computer code and data files described and made available on this web page are distributed under the MIT license
string_pde is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version.
FD1D_WAVE, a C++ code which applies the finite difference method to solve a version of the wave equation in one spatial dimension.
gnuplot_test, C++ codes which illustrate how a program can write data and command files so that gnuplot can create plots of the program results.