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How to create a 3d surface/contour plot in prime 2.0

SOLVED

Re: How to create a 3d surface/contour plot in prime 2.0

Arjen Walstra wrote:

Bicubic2D does seem to do the same but with a linear interpolation.

I checked it by changing you routine from cspline into lspline and the results where identical.

Many thanks again for the help

Good to know, but why is that method called biCUBIC then?

Re: How to create a 3d surface/contour plot in prime 2.0

I don't know why they call it BiCubic2D.

this is what they say in the help file:

"The Bicubic2D function is equivalent to using lspline in two dimensions, with no restrictions on the number of rows and columns of the input values. To obtain a value for a new point, Bicubic2D interpolates down each column of the Z matrix, creating a new row. It then interpolates across the new row. "

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