Are there any C# math libraries that do interpolation / extrapolation
c#, math
Solution
The one I use is the numerics component of Math.NET http://numerics.mathdotnet.com/
It contains "various interpolation methods, including barycentric approaches and splines".
But as the saying goes, there are lies, damn lies and bicubic spline interpolations.
Problem
For example, I have points Y X 100 50 90 43 80 32 need to solve for y = 50 or Y X 1/1/2009 100 1/3/2009 97 1/4/2009 94 1/5/2009 92 1/6/2009 91 1/7/2009 89 need to solve for y = 1/23/2009