This plugin allows QGIS users to browse and load existing GeoRaster objects from Oracle database as raster layers.
The plugins relays solely on the GDAL GeoRaster driver to browse sdo_georaster columns on tables in Oracle database instances. See the GDAL GeoRaster driver for more information.
The plugins shares the same Oracle connection list as the QGIS Oracle provider but it doesn't add support for GeoRaster to the QGIS DB manager.
Also note that the GDAL GeoRaster driver depends on Oracle OCI shared library (oci.dll or oci.so) that can be found on Oracle Server or Instant Client installation.
Select the button New to create a new connection or Edit to change an existing one or use the Remove to eliminate an connection from the list.
The Subdatasets is the mechanins that the GDAL GeoRaster uses to return a list of elements found on the database that result from a search.
Tables might have more than one sdo_georaster column, so if one table from the list is selected the Selection field is updated by hitting on Search button the Subdatasets list will bring the list of sdo_georaster columns in that selected table.
Again, by selecting the column from the Subdatasets list will update the Selection field. That process can be speed up by using double-click to select from the list and start the search at the same time.
Note that in most of the use-case scenarios, there will be one sdo_georaster columns per table.
The Selection field can be edited at any time and that allows users to enter a custom search criteria based on simple where clause or more complex instrutions involving spatial query for example.
Once a query result in the list of GeoRaster objects identified by thier composed key RDT and RID (raster data table and raster id), by selecting on item from the Subdatasets list will enable the OK button to be used and the raster data to be accessed.
A GeoRaster raster image could be displayed and manipulated much faster if the sdo_georaster object has pyramids.