Point order and regrouping

Hi, I 've been wondering is there any simple solution to create a polyline from points with the same initial number. I wanted to create a pattern of lines with a gh script created by a list of points attached to the existing grid of arches. The problem is that I can generate this one by one with an item list but I can not use a series of numbers to create a complete pattern. I have tried Anemone to loop this command but not with great results.

Flip Matrix

…and it is always good practice to attach your definition with internalised geometry.

Arc.gh (32.9 KB)

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Thank You! I have never used this elements but seems like handy one.

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Try also this , if you want remove the first point use cull index

Arc2.gh (40.5 KB)

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