This topic describes the ST_GeometryFromText function. This function constructs a geometry object by using a Well-Known Text (WKT) string.

Syntax

geometry  ST_GeometryFromText(text  WKT);
geometry  ST_GeometryFromText(text  WKT , integer  srid);

Parameters

Parameter Description
WKT The WKT string that you want to specify.
srid The spatial reference identifier (SRID) of the geometry object.

Description

  • This function supports circular strings and curves.
  • This function is equivalent to the ST_GeomFromText function.

Examples

  • Construct a geometry object by using the default parameter settings.
    SELECT ST_GeomFromText('POINT(116 40)');
              st_geomfromtext
--------------------------------------------
 01010000000000000000005D400000000000004440
(1 row)
  • Construct a geometry object by using a specified SRID.
    SELECT ST_GeomFromText('POINT(116 40)',4326);
                  st_geomfromtext
----------------------------------------------------
 0101000020E61000000000000000005D400000000000004440
(1 row)