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02 Mar 2011 Surface Fitting using gridfit Model 2-d surfaces from scattered data Author: John D'Errico

I have scattered 3d data of a membrane subject to tensile loads at the corners resulting in transverse displacement. I'm trying to use gridfit to look at a the 3d surface representing the data. The problem is around the edges the representation gridfit and surf produce is very inaccurate. In fact, at the corners the resulting plot shows negative values when there are no negative z displacements in the data! Any ideas? Thanks.

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