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ST_GeomFromWKB

Signature

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

Description

Converts the Well Known Binary wkb into a Geometry, optionally with spatial reference id srid. Here wkb can specify a POINT, a LINESTRING or a POLYGON.

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

Examples

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

SELECT ST_GeomFromWKB('000000000200000003401000000000000040080000000000004018000000000000401400000000000040200000000000004028000000000000');
-- Answer: LINESTRING (4 3, 6 5, 8 12)

SELECT ST_GeomFromWKB('000000000300000001000000064048800000000000403e0000000000004049000000000000403c000000000000404a800000000000403c000000000000404a8000000000004040000000000000404900000000000040400000000000004048800000000000403e000000000000');
-- Answer: POLYGON ((49 30, 50 28, 53 28, 53 32, 50 32, 49 30))
See also