pwl_interp_2d_scattered, a C++ code which produces a piecewise linear interpolant to 2D scattered data, that is, data that is not guaranteed to lie on a regular grid.
This program computes a Delaunay triangulation of the data points, and then constructs an interpolant triangle by triangle. Over a given triangle, the interpolant is the linear function which matches the data already given at the vertices of the triangle.
The code requires the R8LIB library. The test code requires the TEST_INTERP_2D library.
The computer code and data files described and made available on this web page are distributed under the MIT license
pwl_interp_2d_scattered is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version.
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