fem2d_scalar_display_test

fem2d_scalar_display_test, a MATLAB program which calls fem2d_scalar_display() 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.

Licensing:

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

Related Data and Programs:

fem2d_scalar_display, 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.

Source Code:

• fem2d_scalar_display_test.m, calls all the tests.
• fem2d_scalar_display_test.sh, runs all the tests.
• fem2d_scalar_display_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;