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| BiCubic Interpolation http://forum.alglib.net/viewtopic.php?f=2&t=341 |
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| Author: | RJxn [ Thu Apr 14, 2011 6:40 pm ] |
| Post subject: | BiCubic Interpolation |
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 |
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| Author: | Doug Jenkins [ Thu Apr 14, 2011 11:26 pm ] |
| Post subject: | Re: BiCubic Interpolation |
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. |
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| Author: | RJxn [ Fri Apr 15, 2011 2:33 pm ] |
| Post subject: | Re: BiCubic Interpolation |
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 |
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