Renaming Groups

[petz]

hi there,

i have a little problem here and hope someone can help me.

i have used the partition sop for grouping prims depending on $TZ. so i got 68 groups like prim_0_188833. for later use i need groups like prim_0, prim_1.....in acending order. i have tried to use some expression like prim_`int(fit($BBZ, 0, 1, 0, 67))`, but it did not work by reason of rounding.

i

[aracid]

Hey Petz

take a look at this example file,

I used the foreach sop to rename each group, using a group SOP.

The key expressions are

prim/pointgrouplist : this returns garbage the list generated from the partition based off color.

arg : this is used to extract a particular string out of a list.

stamp : to extract the FORVALUE when inside the foreach sop.

What I did : within the foreach sop:

I use the primgrouplist to return the groups in the partition sop. ie color_9 color_6 color_4 color_5 bla bla.

u can test that with a font sop, just too see what u get.

then i wrap that within an arg expression, which returns any string within the list.

ie if u give arg this string ("color_9 color_6 color_4 color_5",1)

it returns color_6.

So I ask for arg(FORVALUE) of all the groups that are within the partition sop.

Then I rename that group with the same number i use to index the arg,

I hope this helps

But its actually really simple.

renameGroup.hipnc

[petz]

thank