Grasshopper

algorithmic modeling for Rhino

compare point lists

Hi all! I'm new to grasshopper, so maybe this is a very basic problem. But I hope somebody here can help me.

I have two lists with points (list A an list B). I want to compare these two lists in such a way that I get only the points that are in both lists. In other words, I want to know which points that list A and list B have in common. Is there a logic operator (or something else) for that?

thx in advance

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Replies to This Discussion

Permalink Reply by Joseph Oster on December 26, 2015 at 6:32pm

There are many (more recent!) threads about duplicate lines and curves:

http://www.grasshopper3d.com/forum/topic/search?categoryId=2985220%...

How to remove duplicate curves ?

removing not duplicated lines

How to remove all duplicate curves from a 2D voronoi cell structure?

Can anyone please post the "duplicate curve removal" Python component?

Delete Duplicate Lines

remove all duplicated lines

etc.

The title of this one is "compare point lists" - just saying... ;-)

Just out of curiosity, do you consider two lines duplicates if their end points are reversed?

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