**fd2d_convergence_test**,
a MATLAB code which
calls fd2d_poisson(), which
repeatedly solves a Poisson equation on a sequence of finer meshes,
so that the relationship between mesh size H and error norm E can
be explored.

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

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_convergence_test.m, calls all the tests.
- fd2d_convergence_test.sh, runs all the tests.
- fd2d_convergence_test.txt, the output file.

- fd2d_convergence_test.png, the convergence plot.
- fd2d_poisson.m, solves a Poisson problem.