This topic describes the ST_GeomFromEWKT function. This function constructs a geometry object by using an Extended Well-Known Text (EWKT) string.

Syntax

geometry  ST_GeomFromEWKT(text  eWKT);

Parameters

Parameter Description
eWKT The EWKT string that you want to specify.

Description

This function supports circular strings, curves, polyhedral surfaces, triangles, triangulated irregular network (TIN) surfaces, and 3D objects.

Examples

Construct a CircularString object.
SELECT ST_GeomFromEWKT('CIRCULARSTRING(200000 150000 0,21000 160000 0,220000 170000 1)');
                        st_geomfromewkt
---------------------------------------------------------------
 01080000800300000000000000006A084100000000804F024100000000000.
.00000000000000082D4400000000000880341000000000000000000000000.
.00DB0A410000000080C00441000000000000F03F
(1 row)