How to create set in multiple levels data?

[John_c1]

For the list, it can be classified by create set+member index , but how can the same operation be implemented in tree data? the list idem does’t work anymore, wrong assignment.

I want to group rectangles with the same y-axis height in each column of rectangles.

best

[magicteddy]

Hi,

Have a look at this thread, I think you are looking for the same solution.

Problem with data matching

Hey! Since a couple of days I am struggling with a grasshopper definition. I think it all comes down to data matching. As you can see in the picture of the GH canvas I have six branches of lines consisting in only one line per each. In the picture of the viewport it is visible that only 4 lines actually exist. What is happening here!? I´m pulling my hair over here! This doesn´t look normal at all. 13.gh (41.2 KB) [Screenshot 2022-12-27 205841] [Screenshot_20221226_034703]

[PeterFotiadis (Pfotiad0)]

@John_c1

in tree data?

Well … given the opportunity … the answer to that - for the general case: any collection, any imaginable search/query - is that you need code.

See attached where a test rnd Box collection (a Tree) is created (1st C#) and then 2 primitive searches are performed (2nd C#). If you are interested on the subject (or you have plans to walk the right walk) I could explain a bit how things like these are handled properly.

LINQ_GroupBoxesByCoord_V1.gh (119.2 KB)