Format

SDO_GEOR.setSpectralUnit(
     georaster  IN OUT SDO_GEORASTER, 
     unit       IN VARCHAR2);

Description

Sets the unit of measurement for identifying the wavelength interval for a band, or deletes the existing value if you specify a null unit parameter.

Parameters

georaster

GeoRaster object.

unit

Spectral unit. Must be one of the following values if the GeoRaster metadata contains band reference information: METER, MILLIMETER, MICROMETER, NANOMETER. Must be null if the GeoRaster metadata does not contain band reference information.

Usage Notes

Taken together, the spectral unit and spectral resolution identify the wavelength interval for a band. For example, if the spectral resolution value is 2 and the spectral unit value is MILLIMETER, the wavelength interval for a band is 2 millimeters.

The GeoRaster object is automatically validated after the operation completes.

To return the spectral unit for a GeoRaster object, use the SDO_GEOR.getSpectralUnit function.

Examples

The following example sets MICROMETER as the spectral unit for the GeoRaster object (GEORASTER column) in the row with the GEORID column value of 4 in the GEORASTER_TABLE table. (The GEORASTER_TABLE table definition is presented after Example 1-1 in Storage Parameters.)

DECLARE
  grobj sdo_georaster;
BEGIN
  SELECT georaster INTO grobj FROM georaster_table WHERE georid=4 FOR UPDATE;
  sdo_geor.setSpectralUnit(grobj, 'micrometer');
  UPDATE georaster_table SET georaster = grobj WHERE georid=4;
  COMMIT;
END;
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