VEX: if a point is not in any group, then add it to newgroup

[karen]

I've checked group related vex functions, and found inpointgroup the closest to what I'm looking for but It's asking for a specific name of a group.

I may have a lot of groups, all I need is: for all the points that are "groupless" to be added to a new group called newgroup.

[Atom]

What about something like this running in a point wrangle. Fetch all the group names from the intrinsic attribute where they are stored. Initially set all points to be in the "newgroup" group, then loop over the group names. If the point is in the fetched group, remove it from "newgroup."

i@group_newgroup = 1;
string groups[] = detailintrinsic(0, "pointgroups");
foreach (int i; string group; groups) {
    int check = inpointgroup(0,group,@ptnum);
    if(check==1){i@group_newgroup = 0;}
}

 

Edited June 18, 2023 by Atom