Name
ST_AsGML — Returns the Geography Markup Language (GML) representation of a Geometry object.
Synopsis
varchar ST_AsGML(bytea
Geometry);
Description
Returns the GML representation of a Geometry object. The GML supported version is 2.
For a full description of GML geometries, refer to http://www.opengeospatial.org/standards/gml
Coordinate Dimensions
| 2D | 3D | M |
|---|---|---|
 | | |
Spatial Standards Support
| OGC SFS for SQL. 1.1 (1999) | OGC SFS for SQL. 1.1.0 (2005) | OGC SFS for SQL. 1.2.0 (2006) | SQL-MM Part 3 |
|---|---|---|---|
| - | - | - | 5.1.39 |
Examples
SELECT ST_AsGML(ST_GeomFromText('POINT(1 1 1)',25830));
<gml:Point srsName="EPSG:25830">
<gml:coordinates>
1.0,1.0,1.0
</gml:coordinates>
</gml:Point>
SELECT ST_AsGML(ST_GeomFromEWKT('SRID=25830;POLYGON ((1 1, 1 3, 2 4, 3 3, 1 1))'));
<gml:Polygon>
<gml:outerBoundaryIs>
<gml:LinearRing>
<gml:coordinates>
1.0,1.0 1.0,3.0 2.0,4.0 3.0,3.0 1.0,1.0
</gml:coordinates>
</gml:LinearRing>
</gml:outerBoundaryIs>
</gml:Polygon>