Hi, 

I used python script to create a component, which can draw curvature graphic, because I want its outputs. 

I did some research from [uto] post, they did a vb script component here:

http://www.grasshopper3d.com/forum/topics/curve-division-density-wi...

And here it describes how it works:

http://learn.lboro.ac.uk/ludata/cd/cad/mod_level2/section_curvature...

So when I transferred them into python script everything was fine on "Curve". 

However, on "Surface", when I tried to use it on surface's iso curve, it looks different from Rhino's curvature graphic command...... I can not figure out the reason. 

Anyone has suggestion? thanks~ 

Here are my files:

curvatureStudyAsk.3dm

curvatureStudyAsk.gh