> Edmondo Elisei wrote: > > I've imported a .PNG file with r.in.gdal (i.e. map.png) in order to > > make a georeferencing file. The importing procedure returned 3 files:
> > map.red, map.green, map.blue. I don't know how continue to reach my > > goal. Moritz: > For most raster analyses using the three separate bands is better. You > can visualise them with d.rgp. However, if it is the original combined > image you are interested in, you can recreate this with r.composite. [d.rgb] also, r.in.gdal will load those as bands into a group (g.list group), and when you set ground control points (GCPs) with the GUI georeferencing tool or i.points/i.vpoints, you can then use those points to georectify all bands in a single command (i.rectify). If you just wish apply geocoding to the file, either 1) create a .tfw "world file" by hand, 2) use 'gdal_translate -a_ullr' to make a GeoTiff with that info, or 3) in GRASS use r.region to name the outside edges and map resolution. Hamish __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
