ST_PointFromWKB
Name
ST_PointFromWKB — Makes a geometry from WKB with the given SRID
Synopsis
geometry
ST_GeomFromWKB
(
bytea
geom
)
;
geometry
ST_GeomFromWKB
(
bytea
geom
, integer
srid
)
;
Description
The
ST_PointFromWKB
function, takes a well-known binary
representation of geometry and a Spatial Reference System ID (
SRID
)
and creates an instance of the appropriate geometry type - in this case, a
POINT
geometry. This function plays the role of the Geometry
Factory in SQL.
If an SRID is not specified, it defaults to 0.
NULL
is
returned if the input
bytea
does not represent a
POINT
geometry.
This method implements the OGC Simple Features Implementation Specification for SQL 1.1.
s3.2.7.2
This method implements the SQL/MM specification.
SQL-MM 3: 6.1.9
This function supports 3d and will not drop the z-index.
This method supports Circular Strings and Curves.