**fem2d_scalar_display_brief_testF**,
a MATLAB program which
calls fem2d_scalar_display_brief() to
read datafiles describing a set of nodes, their triangulation, and the
value of a scalar quantity at each node, and create a graphics file
of the corresponding surface plot, which is then displayed using
the MATLAB graphics system, using just 5 lines of code.

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

fem2d_scalar_display_brief, a MATLAB program which reads information about nodes, elements and nodal values for a 2D finite element method (FEM) and creates a surface plot of U(X,Y), using the MATLAB graphics system, in 5 lines of code.

- fem2d_scalar_display_brief_test.m, calls all the tests.
- fem2d_scalar_display_brief_test.sh, runs all the tests.
- fem2d_scalar_display_brief_test.txt, the output file.

**ELL** is an L-shaped region on which the function U=X^2+Y^2
is defined.

- ell_nodes.txt, a node file;
- ell_elements.txt, an element file;
- ell_values.txt, a value file;
- ell.png, a PNG image;

**SPIKE** is a circular region on which a solution of the
Poisson equation forms an off-centered spike.

- spike_nodes.txt, a node file;
- spike_elements.txt, an element file;
- spike_values.txt, a value file;
- spike.png, a PNG image;