Grasshopper

algorithmic modeling for Rhino

List Index Matching Values?

Hello:

I have three list indexes. I want to identify values that are identical across the three indexes. And create a fourth list  consisting only of the values that exist across the three indexes. I have tried various combinations of dispatching and culling with no success. 

Attached is a screenshot showing the three list I would like apply a comparative conditional formatting to in the generation of a fourth list. 

I feel like this should be something simply, but for whatever reason I am just not getting to a solution through my own. 

Thanks! 

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Replies to This Discussion

Permalink Reply by Jeroen van Lith on April 16, 2016 at 11:46pm

Hi Dustin,

I tried to come up with a solution, merging the tree lists and checking whether the indices were similar with the relative difference. Hope this works!

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Permalink Reply by Hyungsoo Kim on April 17, 2016 at 12:22am

"Set Intersection" might be what are you looking for.

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Permalink Reply by RAF on April 18, 2016 at 3:56am
Then yes a new aknowledge info. thank u
Permalink Reply by Dustin Altschul on April 17, 2016 at 9:07am

Thank you both for the really quick aid! Both solutions are useful. The set intersection route is exactly what I imagined.Many thanks. 

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