ST_ForcePolygonCCW

Syntax

geometry ST_ForcePolygonCCW(geometry geom);

Parameters

Usage notes

• Non-polygon geometries are returned unchanged.

• Supports 3D geometries. Z coordinates are preserved.

• Supports geometries with M coordinates.

Examples

SELECT ST_AsText(ST_ForcePolygonCCW(ST_GeomFromText('POLYGON((1 1,1 2,2 2,2 1,1 1))')));

Output:

           st_astext
--------------------------------
 POLYGON((1 1,2 1,2 2,1 2,1 1))
(1 row)