ST_MakeEnvelope — Creates a rectangular Polygon from minimum and maximum coordinates.


geometry ST_MakeEnvelope(float xmin, float ymin, float xmax, float ymax, integer srid=unknown);


Creates a rectangular Polygon from the minimum and maximum values for X and Y. Input values must be in the spatial reference system specified by the SRID. If no SRID is specified the unknown spatial reference system (SRID 0) is used.

Availability: 1.5

Enhanced: 2.0: Ability to specify an envelope without specifying an SRID was introduced.

Example: Building a bounding box polygon

SELECT ST_AsText( ST_MakeEnvelope(10, 10, 11, 11, 4326) );

POLYGON((10 10, 10 11, 11 11, 11 10, 10 10))