int nverticesgroup(<geometry>geometry, string groupname)
<geometry>
When running in the context of a node (such as a wrangle SOP), this argument can be an integer representing the input number (starting at 0) to read the geometry from.
Alternatively, the argument can be a string specifying a geometry file (for example, a .bgeo) to read from. When running inside Houdini, this can be an op:/path/to/sop reference.
groupname
A group name or ad-hoc group, like 0-3 or @Cd.x>0.5. This matches the
SOP group naming convention, in particular that an empty string means all
vertices.
| count | |
| groups | |
| vertex |
|