how can group n primitives every each primitives?

i sweep a curve and then skin it, a i convert it to a polygon tube.

i want to extrude some polygons inside to make 1 row will be the regular tube, and then the next row extruded inside, and again. probably after setting the group use a fore each sop i guess.

my tube is 10 primitives cylinder and goes from polygon 0 to 9, the next row is 10 to 19 and goes on,
i want to do a group that get 0 to 9 and then skip 10 to 19, i know there is a function to do that but not sure how to set that up.

thanks .

pelos
how can group n primitives every each primitives?

i sweep a curve and then skin it, a i convert it to a polygon tube.

i want to extrude some polygons inside to make 1 row will be the regular tube, and then the next row extruded inside, and again. probably after setting the group use a fore each sop i guess.

my tube is 10 primitives cylinder and goes from polygon 0 to 9, the next row is 10 to 19 and goes on,
i want to do a group that get 0 to 9 and then skip 10 to 19, i know there is a function to do that but not sure how to set that up.

thanks .

So you want to select every 10 of 20 polygons, right? GroupSOP -> Group by Range-> Select_of_ 10 / 20.

Cool it works.
1 more question, how do i tell Houdini to do some operation in each of that group, in my case i want to bevel the edges so the cable doesn't look so rought. on the parts that i just poly extruded.

thanks.