Paneling tools: Extract all columns or all rows

Hello @rajaa , I have 2 surfaces but how do I use Extract Col to select all Columns of each surface? The components require the indices but my problem here is that my 2 surfaces have different numbers of columns.

Extract Column Problem.gh (14.4 KB)

Does this help?

HI rajaa,

Thank you for the reply. Unfortunately it doesn’t. I tried this before and every time I plug in the J indices, it creates more polylines than needed as you can see in the image below.
image

What I want to achieve is to get all the columns from each surface and group them according to the surface.

Extract Column Problem.gh (21.6 KB)

I see. How about if you split your tree?
see the attached solution.
Extract Column Problem_RI.gh (16.4 KB)