Curtis Edwards wrote:
Mathcad 15.
Im working off a sheet that a previous employee used to generate strain values on a dent. The strain values are approximated using a centered finite difference method. I am trying to track what the individual was doing but get lost at a point in the calculations.
In all references I've read it suggests using bspline interpolation. I'm not familar with that either.
Here are routines for 2D and even 3D interpolation you might find useful. I provided routines for linear and all three types ofspline interpolation for 2D interpolation. 3D is only using linear interpolation but can easaily changed to allow for splines, too.