Hi Karsten,

Thanks for your script - and to Brian too for giving it a speed tweak.

The math of your script looks really interesting. Unfortunately, I don't have enough time right now to get back up to speed on matrices and work my way through your code. If you think the Gaussian elimination method for multiple linear equations would give a significant speed advantage over the Cramer method - and I can see how it might - then the following page offers a ready to use javascript function and may be worth a look:
http://martin-thoma.com/solving-linear-equations-with-gaussian-elimination/

When I ran your script run on the output from my NACA airfoil generating script, it looks very close to what Rhino's own curvature analysis was giving, (I originally started developing my script in RhinoPython). Sorry I don't have consistent screen captures of identical airfoil series to show from MoI and Rhino, but you get the idea:








Cheers,
Hamish