**quad_mesh_order1_display_test**,
a MATLAB program which
calls quad_mesh_order1_display() to make a 3D plot of piecewise constant data defined on a quadrilateral mesh.

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

quad_mesh_order1_display, a MATLAB program which plots piecewise constant data associated with a mesh of quadrilaterals;

- quad_mesh_order1_display_test.m, calls all the tests.
- quad_mesh_order1_display_test.sh, runs all the tests.
- quad_mesh_order1_display_test.txt, the output file.

- pool_nodes.txt, the coordinates of the nodes.
- pool_elements.txt, the indices of nodes that make the elements.
- pool_values.txt, the value associated with each element.
- pool_mesh.png, an "overhead" view of the quadrilateral mesh.
- pool_function.png, a 3D view of the function over the quadrilateral mesh.