New Post: Does MathNet.Numerics support extrapolation?

Thanks for the reply. That's great news, this is a nice package.

Last question: Is it required that the 2 input vectors (eg. samplePoints and sampleValues inputs to _CubicSplineInterpolation()_) -- be monotonic? Or does this depend on which spline implementation I choose? I thought I remembered from college that splines require the two input vectors to be monotonically increasing or decreasing but I wasn't sure if that's specific to which Spline method is used or if this was a general rule for all splines. Ideally I would like an implementation that works with non-monotonic inputs too for robustness.

Thanks for the response,

Alex