boundary
Calculates the boundary of the given geometry. The type of geometry that the boundary takes depends on the type of the input geometry:
For Point - returns an empty geometry. Points have no boundary.
For Multipoint - returns an empty geometry. Points have no boundary.
For Polyline - returns a multipoint containing the end points of the polyline's parts.
For Polygon - returns a polyline describing its outer and inner rings.
Supports true curves.
Return
The boundary of the given geometry, or null if an error occurs.
Since
200.1.0
Parameters
geometry
A geometry object.