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ST_ForcePolygonCW

ST_ForcePolygonCW
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Name

ST_ForcePolygonCW — Orients all exterior rings clockwise and all interior rings counter-clockwise.

Synopsis

geometry ST_ForcePolygonCW ( geometry geom ) ;

Description

Forces (Multi)Polygons to use a clockwise orientation for their exterior ring, and a counter-clockwise orientation for their interior rings. Non-polygonal geometries are returned unchanged.

This function supports 3d and will not drop the z-index.

This function supports M coordinates.

See Also

ST_ForcePolygonCCW , ST_IsPolygonCCW , ST_IsPolygonCW

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