sparse_display_test

sparse_display_test, a C code which calls sparse_display() to read information defining a matrix of numbers and display the sparsity pattern or location of the nonzero elements using gnuplot.

Licensing:

The information on this web page is distributed under the MIT license.

Related Data and Programs:

sparse_display, a C code which can read information defining a matrix of numbers and display the sparsity pattern or location of the nonzero elements using gnuplot. This operation is already available in the built-in matlab "spy" command.

Source Code:

• sparse_display_test.c, a sample calling program.
• sparse_display_test.sh, runs all the tests.
• sparse_display_test.txt, the output file.

• wathen_ge_data.txt, data defining the location of the nonzero entries of the Wathen matrix.
• wathen_ge_commands.txt, gnuplot commands to display the data.
• wathen_ge.png, an image of the sparsity pattern for the Wathen matrix.
• before_data.txt, data defining the location of the nonzero entries of a matrix, as created by DEAL.II.
• before_commands.txt, gnuplot commands to display the data.
• before.png, an image of the sparsity pattern for the before matrix.
• after_data.txt, data defining the location of the nonzero entries of a matrix, as created by DEAL.II (after reordering of variables).
• after_commands.txt, gnuplot commands to display the data.
• after.png, an image of the sparsity pattern for the after matrix.
• 20x30_data.txt, data defining the location of the nonzero entries of the 20x30 matrix.
• 20x30_commands.txt, gnuplot commands to display the data.
• 20x30.png, an image of the sparsity pattern for the 20x30 matrix.