I can't seem to figure this out and my searches use keywords that return a whole bunch of unrelated stuff.

Is there a way to enter in a group or source group for a node to act on that excludes an existing group?

for example, if I have group STUFF and I want the node to act on everything that is not in group STUFF, how do I enter that into the field?

I tried !STUFF and ^STUFF, but they don't seem to work.

thanks!
z

Hi,
Look at pattern matching in the help, You can try things like mygroup_* ^mygroup1 . That would select all groups numbered mygroup_4 mygroup_3 mygroup_2 but not mygroup_1

rob

hi Rob,

thanks for the quick reply. In your example how can I select everything that is not in mygroup1 even if it is not a member of a group. Let's say I have 100 points and a group, mygroup1, with 20 of those points in it. How can I select the other 80 points with an expression (like !mygroup1 or something) for a node to act on? Or maybe I have to use another group node and use the combine function to create this new NOT_mygroup1 group first?

thanks
z

circusmonkey
Hi,
Look at pattern matching in the help, You can try things like mygroup_* ^mygroup1 . That would select all groups numbered mygroup_4 mygroup_3 mygroup_2 but not mygroup_1

rob

next to the group field is a little rollout that gives you the option to get the groups point selection. If you put an exclamation mark in front of that you'll get what you want, in your case it would be “!0-19”.
That or you do what you already thought of, creating another group by using
the combine functions of the Group SOP. I don't think there's another way of doing it, but correct me if I'm wrong!

cheers!

Manu