string_pde, an Octave 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 and an Octave version.
allen_cahn_pde, an Octave code which sets up and solves the Allen-Cahn reaction-diffusion system of partial differential equations (PDE) in 1 space dimension and time.