2D interpolation in Labview 8.5

[Mimma]

Hi everyone,

I am  using the 2D interpolation routine in LabView 8.5, with the bicubic mode. Before using that I wrote my own routine to do the bicubic interpolation and I used an algorithm I found on the web. As the results I obtain from the two routines are different, I think that  the weighting functions used in the Labview routine are different from the ones I used. Does someone know the algorithm used to implement the 2D interpolation function in LabView 8.5?  

[altenbach]

According to the LabVIEW help, LabVIEW uses an algorithm from "Numerical Recipes in C". Chapter 3 is available free online, so try the link and browse to chapter 3.6.

What are you using and how do the results differ? Is the difference significant?