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I'm looking for a way to visualize scattered data with interpolation on a heatmap. Matlab's griddata function solves this with nearest, linear and cubic interpolation by internally using Delaunay triangulation.

Does ILNumerics have a scattered data interpolation function similar to griddata, or is there a math library for C# which does this?

Thanks!

Jostein Topland
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the closest ILNumerics can bring you is regression: fit a function to the data and use the function to create a surface. In order to fit a function, you have the following options in ILNumerics:

linsolve, ridge_regression, optimpdl (still in beta)

The surface is than straightforward: new ILSurface().

But there is currently no such function like ‘griddata’ in ILNumerics.

Haymo Kutschbach
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