GetNumberOfPolygons()

Gets the number of polygons in an area feature.

Added in Version 2017.

n_polygons = GetNumberOfPolygons(integer id, opt array options)

Argument	Contents
id	The ID of the area feature

Option	Type	Contents
Clockwise	Boolean	If "true" allows you to see how many of the polygons are clockwise, i.e., not holes.

The number of polygons in the area feature.

The options array is an optional argument.
The current layer must be an area layer.
GetNumberOfPolygons() makes it easy to see the number of polygons in an area feature in a formula field.