4.4 Subsetting GeoRaster Objects with Polygon Clipping

With GeoRaster, subsetting means cropping rasters spatially, extracting or duplicating raster layers, or doing both together. To perform subsetting, use the SDO_GEOR.subset procedure. For example, you can call this procedure to crop a small area or obtain a subset of a few layers of a GeoRaster object, to duplicate layers, to specify storage parameters such as blocking and interleaving for the resulting object, and to perform polygon clipping.

For examples, see the SDO_GEOR.subset reference topic.

You can also use the SDO_GEOR_AGGR.mosaicSubset procedure to perform subsetting with parallelism (see Parallel Compression, Copying, and Subsetting).