Curves on surface??

I joined here in July of last year and am just now finding enough time to play with Grasshopper. One of

my projects requires dividing a surface with a grid and drawing lines on the surface through the grid points. I can draw one set of lines but unable to figure out how to draw the second set. I can draw

straight lines through the second set of points but not curves on the surface. I could use some help with this if anyone has the time? Attaching what I have developed so far. RPsurfdivideA.ghx. Hoping to develop a structure to stretch cloth over laser cut parts. Will post if I am successful.

thanks for any help.

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Comment by mohammad abdelkhalek on March 8, 2011 at 11:05am: lists and data trees tutorial from designalyze.com

good luck

Comment by Rick Paul on March 8, 2011 at 9:06am: Mohammad,

YES! YES! And many thanks for a problem I spent several hours attempting to solve. Still do not understand data structure coming out of Sdivide. I am still new at trying to figure out this

site. Hope this get to you. Thanks again. RP