Christian Müller wrote: > That is a surprise. > In all my tests I had no memory problems with gdal_retile. Sometimes I > had some memory problems with gdal_merge. The biggest input file for > gdal_retile was a 80 GB Erdas image (not compressed) and it works fine. > I have never testet with an ECW File and my tests run on a Linux Box or > AIX Box. > Perhaps the problem is in the ECW gdal driver. You can try to transform > your ecw file in another format using gdal_transform. >
That's may be caused by something wrong with the ECW driver indeed. I will test gdal_retile again once I have a clean GDAL+ECW install. Regards Gilles > > > Gilles Bassière writes: >> Christian Müller wrote: >>> gdal_retile.py definitely creates georeferenced tiles, I developed this >>> utility. >>> I did some experiments reprojecting the single tiles while retiling, but >>> it simply does not work. As a consequence I canceled the reprojecting >>> support. >>> The solution for your problem is: >>> 1) Use gdal_merge to create the big image >>> 2) reproject with gdal_warp >>> 3) use gdal_retile to create your new tiles >>> I did a lot of experiments to avoid creating the big picture without >>> success. >> >> I understand. In my case, gdal_retile.py eventually crashed with a >> Python MemoryError. I assume it is unsurprising with a 7.5GB input for a >> single Python process. >>> >>> Even Rouault writes: >>>> Le Monday 22 March 2010 19:35:47 Gilles Bassière, vous avez écrit : >>>>> Hi, >>>>> The problem with this workflow is that it creates non-georeferenced >>>>> tiles (I don't know if this is the intended behaviour of this >>>>> command). >>>> >>>> gdal_retile.py *does* create georeferenced tiles. I've just verified >>>> it. What make you think the contrary ? >>>> _______________________________________________ >>>> gdal-dev mailing list >>>> [email protected] >>>> http://lists.osgeo.org/mailman/listinfo/gdal-dev >>> >>> >>> _______________________________________________ >>> gdal-dev mailing list >>> [email protected] >>> http://lists.osgeo.org/mailman/listinfo/gdal-dev >> >> >> -- >> Gilles Bassière - Web/GIS software engineer >> http://gbassiere.free.fr/ > > -- Gilles Bassière - Web/GIS software engineer http://gbassiere.free.fr/ _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
