9.44 OPG_APIS.GET_WKTGEOMETRY_FROM_V_T_COLS
Format
OPG_APIS.GET_WKTGEOMETRY_FROM_V_T_COLS( v IN NVARCHAR2, t IN INTEGER, srid IN NUMBER DEFAULT NULL ) RETURN SDO_GEOMETRY;
Description
Returns an SDO_GEOMETRY object based on a geometry in WKT (well known text) form, a type value, and optionally an SRID.
Parameters
- v
-
A String containing spatial data in serialized form.
- t
-
Value indicating the type of value represented by the
v
parameter. Must be 20. (A null value or any other value besides 20 returns a null SDO_GEOMETRY object.) - srid
-
SRID (coordinate system identifier) to be used in the resulting SDO_GEOMETRY object. The default value is 8307, the Oracle Spatial SRID for the WGS 84 longitude/latitude coordinate system.
Usage Notes
If there is incorrect syntax or a parsing error, this function returns NULL instead of generating an exception.
Examples
The following statements return a point geometry and a polygon geometry
SQL> select opg_apis.get_wktgeometry_from_v_t_cols('POINT(10.0 5.1)',20,8307) from dual;
OPG_APIS.GET_WKTGEOMETRY_FROM_V_T_COLS('POINT(10.05.1)',20,8307)(SDO_GTYPE, SDO_
--------------------------------------------------------------------------------
SDO_GEOMETRY(2001, 8307, SDO_POINT_TYPE(10, 5.1, NULL), NULL, NULL)
SQL> select opg_apis.get_wktgeometry_from_v_t_cols('POLYGON((-83.6 34.1, -83.6 34.3, -83.4 34.3, -83.4 34.1, -83.6 34.1))',20,8307) from dual;
OPG_APIS.GET_WKTGEOMETRY_FROM_V_T_COLS('POLYGON((-83.634.1,-83.634.3,-83.434.3,-
--------------------------------------------------------------------------------
SDO_GEOMETRY(2003, 8307, NULL, SDO_ELEM_INFO_ARRAY(1, 1003, 1), SDO_ORDINATE_ARR
AY(-83.6, 34.1, -83.6, 34.3, -83.4, 34.3, -83.4, 34.1, -83.6, 34.1))
Parent topic: OPG_APIS Package Subprograms