shape-preserving interpolation on a surface

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Jason
Jason on 8 Oct 2014
Commented: Star Strider on 9 Oct 2014
Hi all:
My underlying data is a surface. I was wondering if it's possible to use shape-preserving interpolation on the surface. The MATLAB code PCHIP only works on curves.
My purpose is to figure out the partial derivatives of the surface. Because the surface is non-monotonic, I worry that standard surface interpolation techniques could go astray.
Thanks, Jason

Answers (1)

Star Strider
Star Strider on 8 Oct 2014
The documentation for Interpolating Gridded Data and gradient will provide you with functions and examples. The gradient documentation also seems to provide an illustration of what I believe you want to do.

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