int nuniqueval(<geometry>geometry, string attribclass, string attribute_name)
Returns the number of unique values across all values of an attribute. You can use uniqueval to iterate though the set of unique values.
<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.
attribclass
One of "detail"
(or "global"
), "point"
, "prim"
, or "vertex"
.
You can also use "primgroup"
, "pointgroup"
or "vertexgroup"
to read from groups.
Examples ¶
Test if all values of the point attribute foo
are unique
int test = nuniqueval(0, "point", "foo") == npoints(0)
See also | |
attrib |
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