Grasshopper

algorithmic modeling for Rhino

Split list with point of same coordinates

Hello, I have trouble splitting a list in smaller ones containing points with the same y coordinate.

I am creating a terrain surface from level curves, and i'm doing it with the contour method to create the net of curves.

Now i have to split my list of points into smaller ones containing only the points sharing the same y coordinates and then create a polyline between them.

I just can't figure out how to do that. 

I attach a screenshot.

Thanks a lot!

Views: 4717

Replies to This Discussion

Permalink Reply by Michael Pryor on April 3, 2014 at 2:36pm

You first need to group by y coordinate, but to insure they poly line doesn't overlap you should then sort those groups internally by the direction they will run (in my example I sort by x)

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Permalink Reply by michele tonizzo on April 3, 2014 at 3:09pm

Thanks it worked pretty well!!

But i don't know why it skips some points..

Permalink Reply by Michael Pryor on April 3, 2014 at 5:43pm

cant tell unless you attache a file

Permalink Reply by michele tonizzo on April 4, 2014 at 12:58am

Thanks again!

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