LAKE
A Lake Problem for FFP_SPARSE

The LAKE problem uses the geometry of a simulated lake with an island. This is an example of how to specify a problem to be solved by FFP_SPARSE.

• lake.C, the user-supplied routines to evaluate the right hand side, linear coefficient, and boundary conditions;
• lake.csh, commands to compile the user routines, link them with the partial program, and run the program;
• lake.out, output from a run of the program;
• lake_nodes.txt, a text file containing a list, for each node, of its X and Y coordinates;
• lake_nodes.png, a PNG image of the nodes.
• lake_triangles.txt, a text file containing a list, for each element, of the three nodes that compose it;
• lake_elements.png, a PNG image of the nodes.
• lake_solution.txt, a text file containing the solution U at each node (X,Y);

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