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ST_PointFromWKB

Signatures

GEOMETRY ST_PointFromWKB(binary wkb);
GEOMETRY ST_PointFromWKB(binary wkb, INT srid);

Description

Converts the Well Known Binary wkb into a Geometry, optionally with spatial reference id srid. Verifies that wkb does in fact specify a POINT.

Implements the OpenGIS Simple Features Implementation Specification for SQL version 1.2.1.

Examples

SELECT ST_PointFromWKB('0101000000000000000000F03F000000000000F03F');
-- Answer: POINT(1 1)

SELECT ST_PointFromWKB('000000000200000004401400000000000040140000000000003ff00000000000004000000000000000400800000000000040100000000000004058c000000000004008000000000000', 4326);
-- Answer: POINT(5 5)

SELECT ST_PointFromWKB(ST_AsBinary('LINESTRING(2 3, 4 4, 7 8)'::Geometry), 2154);
-- Answer: Provided WKB is not a POINT.
See also