Big thanks Yves for pointing gdal (never thinking at all for it), there's a special command to merge multiple tiles into one with gdal_merge.py. Keep gdaltindex under the pillow :-)
Le lundi 21 avril 2008, Jacolin Yves a écrit : > Le Monday 21 April 2008 14:04:39 Lionel Roubeyrie, vous avez écrit : > > Hi all, > > I have several tiles rasters (geotiff) describing a large area in high > > resolution, and generally I work on a small area, having to import all > > tiles because they don't have explicit names (and without the possibility > > to put them directly under a group (see a previous post), which should be > > a great improvement). > > Then, is it possible to extract/create a new raster for the desired area > > with QGIS/GRASS (know it's possible with Arcmap, with difficulties) ? > > Thanks > > Hi Lionel, > > You can use gdaltindex to create an indexof your tile in shapefile format, > after displaying it you can show the "location" field on your map and find > the filename of the Raster you have to load for your area. > > If you want to extract an area from your raster you can again use gdal [1] > with some option to cut all data out of your area. I think you can use > g.region to zoom into your area and then export the raster from your view > region, after creating one main raster. > > I am agreeing with you for a better group management ;) May I need to > create a new ticket? Another possibility should be that QGIS manage index > file. > > Y. -- Lionel Roubeyrie - [EMAIL PROTECTED] Chargé d'études et de maintenance LIMAIR - la Surveillance de l'Air en Limousin http://www.limair.asso.fr _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user