ST_PointOnSurface method

ST_PointOnSurface method

Returns a point that is guaranteed to be on a surface in the multi-surface

Syntax

multisurface-expression.ST_PointOnSurface()

Returns

ST_Point If the multi-surface is the empty set, returns NULL. Otherwise, returns an ST_Point value guaranteed to spatially intersect the ST_MultiSurface value.
The spatial reference system identifier of the result is the same as the spatial reference system of the multisurface-expression.

Remarks

See also

Standards and compatibility

Example

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