SDO_UTIL.REVERSE_LINESTRING

35.69 SDO_UTIL.REVERSE_LINESTRING

Format

SDO_UTIL.REVERSE_LINESTRING(
     geometry  IN SDO_GEOMETRY 
     ) RETURN SDO_GEOMETRY;

Description

Returns a line string geometry with the vertices of the input geometry in reverse order.

Parameters

geometry: Line string geometry whose vertices are to be reversed in the output geometry. The SDO_GTYPE value of the input geometry must be 2002. (SDO_GTYPE explains SDO_GTYPE values.)

Usage Notes

Because the SDO_GTYPE value of the input geometry must be 2002, this function cannot be used to reverse LRS geometries. To reverse an LRS geometry, use the SDO_LRS.REVERSE_GEOMETRY function, which is described in SDO_LRS Package (Linear Referencing System) .

Examples

The following example returns a line string geometry that reverses the vertices of the input geometry.

SELECT SDO_UTIL.REVERSE_LINESTRING(
  SDO_GEOMETRY(2002, 8307, NULL, SDO_ELEM_INFO_ARRAY(1,2,1),
    SDO_ORDINATE_ARRAY(-72,43, -71.5,43.5, -71,42, -70,40))
) FROM DUAL;
 
SDO_UTIL.REVERSE_LINESTRING(SDO_GEOMETRY(2002,8307,NULL,SDO_ELEM_INFO_ARRAY(1,2,
--------------------------------------------------------------------------------
SDO_GEOMETRY(2002, 8307, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), SDO_ORDINATE_ARRAY(
-70, 40, -71, 42, -71.5, 43.5, -72, 43))