Have you tried specifying the output format? gdal_translate will create geotiff by default. Perhaps that is causing the problem: qgis thinks it is reading a ecw file, where in reality it's a geotiff
So gdal_translate in.ecw out.tif -a_srs EPSG:3078 or gdal_translate in.ecw out.ecw -a_srs EPSG:3078 -of ECW On Sat, Jul 2, 2011 at 7:52 PM, Lee <[email protected]> wrote: > I've tried the QGIS-user listserv to no avail. Figured I'd try here, perhaps > at least I can get forwarded to the right one. > > I have an ECW that does not seem to want to accept a CRS definition. > Initially I was attempting to warp the ECW file from Michigan Georef to > NAD83 UTM zone 17. I got an error. > > ERROR 1: Unable to compute a transformation between pixel/line > and georeferenced coordinates for /home/lee/documents/gis/ > detroit/aerial/WYANDOTTE_NE/WYANDOTTE_NE.ecw. > There is no affine transformation and no GCPs > > QGIS shows a generated CRS that seems right for Michigan Georef, it just > does not seem to recognize that a CRS is there, so I cannot warp to the new > projection. Next, I tried manually assigning the CRS in question so I would > then be able to convert. > > gdal_translate in.ecw out.ecw -a_srs EPSG:3078 > > This creates a file, but one which is un-readable in qgis. > > I am not exactly sure which is the problem that needs fixing here. > Essentially, I just need to find a way to get this ECW file (in Michigan > Georef) as any format (in NAD83 UTM zone 17). So whatever suggestions you > have for accomplishing this, I am willing to try. > > Thanks for any help in advance. > > -- > all the best, > Lee > > _______________________________________________ > UbuntuGIS mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/ubuntu > http://trac.osgeo.org/ubuntugis/wiki > > _______________________________________________ UbuntuGIS mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/ubuntu http://trac.osgeo.org/ubuntugis/wiki
