**vandermonde_approx_2d_test**,
a C++ code which
calls vandermonde_approx_2d(), which
finds P(X,Y), a polynomial approximant to Z which depends on two independent
variables X and Y, by setting up and solving an overdetermined linear system
involving the Vandermonde matrix.

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

vandermonde_approx_2d, a C++ code which finds a polynomial approximant p(x,y) to data z(x,y) of a 2D argument by setting up and solving an overdetermined linear system for the polynomial coefficients involving the vandermonde matrix.

- vandermonde_approx_2d_test.cpp, a sample calling program.
- vandermonde_approx_2d_test.sh, runs all the tests.
- vandermonde_approx_2d_test.txt, the output file.