class PointOnSurface(expression, **extra)
Availability: PostGIS, Oracle, SpatiaLite
Accepts a single geographic field or expression and returns a Point
geometry guaranteed to lie on the surface of the field; otherwise returns None
.
class PointOnSurface(expression, **extra)
Availability: PostGIS, Oracle, SpatiaLite
Accepts a single geographic field or expression and returns a Point
geometry guaranteed to lie on the surface of the field; otherwise returns None
.
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