I would like to know how to group items within sublists. I originally had 5 branches (sets of points) that I wanted to further divide into groups of 2 points each. When I partition the original lists I’m left with a structure that contains 23 branches with 2 items per branch. I must be executing something incorrectly or misunderstanding the branch structure.

Thank you! This is along the same track that I was on, I believe. I have amended your definition to include what I was working on previously. It’s close but I still need an additional level of grouping. Perhaps I can achieve this will a culling pattern as you suggested.

The data structure appears to be identical to what was upstream (check the point list or param viewer). What I would like to have is each cell (branch?) further divided into groups of two. Instead of 0-1 at every location it is sequential over the length of the list, e.g., 0-0,1-1, 2-2, etc. The reason is that I want those points to be associated with the outer curve corner points downstream (so there will be groups of 3 points in the end). Is this possible? Perhaps I’m going about this in the wrong way and over-complicating things.

I approached it somewhat differently in this solution. I shifted and wove upstream instead of trying to partition the lists at the end. Is there a cleaner way to achieve this?

shelco thanks for including your file, I believe @Adam_M gave you the answer unless you were looking for something else - My version is pretty much the same as Adam’s but I used point on curve instead of evaluating the curves