Convert geometries

The following geometry conversion functions are available:

Function	Description
`ST_AsBinary`	Geometry → Well Known Binary
`ST_AsGML`	Geometry → GML
`ST_AsText`	Alias for `ST_AsWKT`
`ST_AsWKT`	Geometry → Well Known Text
`ST_Force2D`	3D Geometry → 2D Geometry
`ST_GeomFromGML`	GML → Geometry
`ST_GeomFromText`	Well Known Text → Geometry
`ST_GeomFromWKB`	Well Known Binary → Geometry
`ST_GeometryTypeCode`	Return the OGC SFS type code of a Geometry
`ST_GoogleMapLink`	Geometry → Google map link
`ST_Holes`	Return a Geometry's holes
`ST_LineFromText`	Well Known Text → `LINESTRING`
`ST_LineFromWKB`	Well Known Binary → `LINESTRING`
`ST_MLineFromText`	Well Known Text → `MULTILINESTRING`
`ST_MPointFromText`	Well Known Text → `MULTIPOINT`
`ST_MPolyFromText`	Well Known Text → `MULTIPOLYGON`
`ST_OSMMapLink`	Geometry → OSM map link
`ST_PointFromText`	Well Known Text → `POINT`
`ST_PointFromWKB`	Well Known Binary → `POINT`
`ST_PolyFromText`	Well Known Text → `POLYGON`
`ST_PolyFromWKB`	Well Known Binary → `POLYGON`
`ST_ToMultiLine`	Geometry's coordinates → `MULTILINESTRING`
`ST_ToMultiPoint`	Geometry's coordinates → `MULTIPOINT`
`ST_ToMultiSegments`	`GEOMETRY(COLLECTION)` → `MULTILINESTRING`