Selon Etienne Tourigny <[email protected]>: > It would be nice to have this bultin to gdalbuildvrt (as an optin of > course) - could the authors make a patch?
For a *byte* data type, which must be the common case, why wouldn't QGIS just use min=0 and max=255 when statistics are not computed ? > > Regards, > Etienne > > On Thu, Aug 23, 2012 at 7:34 AM, Micha Silver <[email protected]> wrote: > > On 23/08/2012 11:33, Giovanni Manghi wrote: > >> > >> http://trac.osgeo.org/gdal/wiki/CatalogueForQIS > > > > > > Magic! Many thanks, and also to Andrea Peri for posting the python code. > > In windows I had to run it as: " python computestats.py -approx > > <filename.vrt> " > >> > >> it would be very nice to have this added as tool directly in QGIS... > >> > >> cheers > >> > >> > >> -- Giovanni -- > >> > >> > >> On Thu, 2012-08-23 at 11:27 +0300, Micha Silver wrote: > >>> > >>> Hello all: > >>> > >>> I have a batch of over 100 raster tiles in ecw format. Each is 50 - > >>> 100 MB in size. When I choose 20 or so files to load they appear > >>> (render) very quickly - in a matter of a few seconds or less. If I > >>> create a vrt of that same batch of tiles, it takes a long time to > >>> first render - upwards of 15 - 30 seconds. Once the vrt is loaded > >>> response is excellent (zooming, etc). But that initial delay is a bit > >>> annoying. Anything I can do to improve it? (QGIS 1.8, Win 7 64 bit) > >>> > >>> Many thanks, > >>> Micha > >>> > >>> -- > >>> Micha Silver > >>> 052-3665918 > >>> _______________________________________________ > >>> Qgis-user mailing list > >>> [email protected] > >>> http://lists.osgeo.org/mailman/listinfo/qgis-user > >> > >> > >> > >> This mail was received via Mail-SeCure System. > >> > >> > > > > > > -- > > Micha Silver > > 052-3665918 > > > > _______________________________________________ > > Qgis-user mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/qgis-user > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user > _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
