forum.alglib.net

Hi, I am kind of new to VBA.

I am trying to use the Bicubic Interpolation functionality. I want to interpolate points on a curved plane and bilinear interpolation doesn't capture some of the convexity that i need.

I only imported the spline3.bas into my excel project. But in the internal subroutine "Sub BicubicCalcDerivatives", it calls BuildCubicSpline and SplineDifferentiation, both of which I cannot find in any of the other modules included in the download. Would anyone happen to know where these are?

Thank you in advance for any help.

RJ

If you are using the VBA current version (2.6) they are both in Spline3.bas

You might find the blog post here useful: http://newtonexcelbach.wordpress.com/20 ... th-alglib/

It contains a link to a spreadsheet with working examples of bicubic interpolation.

_________________
Doug Jenkins
http://newtonexcelbach.wordpress.com/

Doug,

Thank you so much for the info and the link! I think your blog is great, thank you for putting that content out there!

RJ