delete first and second point from a collection of points

Hi
i am trying to perforate a surface
i have obtained a series of points on which i have extruded my circles but i would like to ignore those two that are at the edges of the surface.

how do I do that

I am new in grasshopper, I hope someone can help.perforation1.3dm perforation%20beams.gh

Replies to This Discussion

Permalink Reply by Jonah Hawk on December 22, 2016 at 7:49pm

Permalink Reply by Jonah Hawk on December 22, 2016 at 7:51pm

Sorry, I didn't open your definition. But if you use Curve Closest Point, you can check the distances from the points to the surface edges, then split the list of points by which ones fall within a certain distance from the edge.

Permalink Reply by gilberto on December 23, 2016 at 3:19am

Jonah
thanks a lot.
i am having another problem and I have a feeling that it could be solved in a similar way
basically I have these circles created from points
when i backed them I get a lot more than i am supposed to. some are duplicates and i remove them from rhino (seldup) but some are probably just a tiny bit off so i dsont know how to select them and delete them..
maybe there is a way to select some near surfaces by setting a range?

I cant figure out why gh is baking duplicates anyways but i guess its useful to know how to select near surface anyways for future issues as well.

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