SDO_GEOR_AGGR.getMosaicResolutions

Format

SDO_GEOR_AGGR.getMosaicResolutions(
     inGeoRasters    IN SYS_REFCURSOR, 
      resolutionUnit IN VARCHAR2 DEFAULT NULL 
      ) RETURN  SDO_RANGE_ARRAY;;

or

SDO_GEOR_AGGR.getMosaicResolutions(
     georasterTableNames  IN VARCHAR2, 
     georasterColumnNames IN VARCHAR2, 
      resolutionUnit      IN VARCHAR2 DEFAULT NULL 
      ) RETURN  SDO_RANGE_ARRAY;

Description

Returns the resolution range of a virtual mosaic or a collection of GeoRaster objects in a specified unit.

Parameters

inGeoRasters: Source GeoRaster objects in a cursor.
georasterTableNames: Names (comma-separated) of the tables containing the source GeoRaster objects.
georasterColumnNames: Names (comma-separated) of the columns of type SDO_GEORASTER in tables corresponding to the table names in georasterTableNames.
resolutionUnit: Unit of measure for the returned resolution range. If specified, it must be a quoted string in the format 'unit=value' where value is the unit name value (a valid UNIT_OF_MEAS_NAME value from the SDO_UNITS_OF_MEASURE table). If not specified or null, the returned resolution range is in the unit of meter.

Usage Notes

The returned resolution range is in the format of SDO_RANGE_ARRAY(SDO_RANGE(min_x, max_x), SDO_RANGE(min_y, max_y)). where min_x, max_x are the minimum and maximum resolution on the x dimension, and min_y, max_y are the minimum and maximum resolution on the y dimension.

The SDO_RANGE_ARRAY type is defined as VARRAY(1048576) OF SDO_RANGE. The SDO_RANGE type is defined as:

Name                                      Null?    Type
----------------------------------------- -------- -------
LB                                                 NUMBER
UB                                                 NUMBER

Examples

The following example gets the spatial resolution of a virtual mosaic or a collection of GeoRaster objects with the returned values in meters.

SELECT sdo_geor_aggr.getMosaicResolutions('georatser_table_1, georaster_table_2', 'georaster, georaster', 'unit=meter') FROM DUAL;