Addition of other interpolation methods

[qlahcim]

Any chance to add some other interpolation methods (cubic, spline, nearest, ...) to be more compatible with interp1 and griddedInterpolant? The only linear interpolation method is supported, which is a bit limited. I understand that addition of other interpolation method support is not easy task, but in some cases (especially in evaluating the query points one by one (in a for-loop) regime) are other methods very important, too.

[otvam]

I am not anymore using this code actively so it is unlikely that other interpolation methods will be added.
However, the structure of the code should be good for implementing other methods (especially, the method for finding the mapping between the query and interpolation points).