Fri 27 Jul 2007 16:13, Frank Warmerdam wrote: > r.in.gdal does not exactly import overviews from any of it's input formats. > However, GDAL does support overviews in Imagine files (.rrd files) so if > you tried to import a big imagine files withoverviews into a low resolution > location r.in.gdal would pull from an overview to speed up the import.
IMO this should make it into the otherwise excellent documentation. http://www.gdal.org/frmt_hfa.html says regarding write support.. | If overviews are generated, they will be in an external .ovr (GeoTIFF | file) recognised only by GDAL, not in the .rrd format produced by | Imagine. ..so one might (wrongfully) believe there's also absolutly no read support for .rrd files. _______________________________________________ grassuser mailing list [email protected] http://grass.itc.it/mailman/listinfo/grassuser
