nuniqueval

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

examples

Test if all values of the point attribute foo are unique

int test = nuniqueval(0, "point", "foo") == npoints(0)