pwl_interp_2d_scattered_test, a C++ code which calls pwl_interp_2d_scattered(), which produces a piecewise linear interpolant to 2D scattered data, that is, data that is not guaranteed to lie on a regular grid.
The computer code and data files described and made available on this web page are distributed under the MIT license
pwl_interp_2d_scattered, a C++ code which evaluates a piecewise linear interpolant to data which is available at an irregularly arranged set of points.