Cull in opposite direction

[slenderman1 (ntg)]

Hello,

I would like to ask how to pick the points on the opposite direction (blue lines in the pic)? I have tried flip matrix but did not seem to work

Thank you
test grid.gh (9.1 KB)

[11159 (Masaki)]

Hello,
Like this?
test grid_Re.gh (14.1 KB)

[magicteddy]

This could also be a way and gives a bit more flexibility.

test grid.gh (18.4 KB)

[slenderman1 (ntg)]

Yes! Thank you very much. Didnt think of the partition and rev component

[slenderman1 (ntg)]

thank you for this!!