**triangulation_quad_test**,
a C++ code which
calls triangulation_quad(), which
reads information defining a triangulation, and estimates the integral of
a function whose values are given at the nodes.

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

triangulation_quad, a C++ code which estimates the integral of a function over a triangulated region.

- triangulation_quad_test.sh, runs all the tests.
- triangulation_quad_test.txt, the output file.

**EXAMPLE** is a set of nodes in the unit square, which have
been arranged into an order 3 triangulation.

- example_nodes.txt, the node file.
- example_elements.txt, the element file.
- example_values.txt, the values file, containing 4 values at each node. (These values are actually the values of 1, x, y, and x*y, which have exact integrals of 1, 1/2, 1/2, and 1/4.) Only the first three integrals will be estimated exactly.