3D Interpolation Table

[polyplay26]

Hello!
Does anyone knows how to build a VI that that makes a intepolation from a 3D Table?
Thanks

[CoastalMaineBird]

If what you have is an array of {X|Y|Z} coordinate bundles, then your task is easy:

If you want a coordinate 1/4 the way between this point and that point, you solve:
This + (That - This ) *0.25
That works without separating the components - it will even work on two whole arrays directly, if that's what you have.

[altenbach]

Could you clarify what your definition of a 3D table is?

A table is usually 2D array. Do you want to interpolate in 2D, e.g. get the value at fractional index pairs? In this case, easiest would be to make a bilinear interpolation as e.g. shown in one of my earlier posts .

[polyplay26]

I use a 3D Table to build a 3D Graph. The idee is to find z point using x and y points. The interpolation is not liniar.

[CoastalMaineBird]

The idee is to find z point using x and y points. The interpolation is not liniar.

Well, now I'm really confused.

You can't construct a Z point of a 3-D object based on an X and Y point.

Z is an independent axis, not a function of X and Y.

If you ask a better question, you'll get a better answer.

[Ben]

I second Coastal's comments.

Take a good close look at the examples that Altenbach suggested.

As revealed in his bio found here

http://www.ni.com/devzone/lvzone/member_altenbach.htm

" I have completely rewritten the Levenberg marquardt routines to allow global fitting of multiple multidimensional data sets and runtime selection of fitting parameters. "

He does math like this for breakfast.

Ben