Thanks Frank, ".... the command cannot determine it from the .shp file" Why? Is it because the EPSG code of this .shp is unknown to GDAL or GDAL can't get any SRS from a .shp? Should I add the EPSG code somewhere in a configuration file?
Best regards, Steve Steve Toutant, M. Sc. Analyste en géomatique Secteur environnement Direction des risques biologiques, environnementaux et occupationnels Institut national de santé publique du Québec 945, avenue Wolfe Québec, Qc G1V 5B3 Tél.: (418) 650-5115 #5281 Fax.: (418) 654-3144 [email protected] http://www.inspq.qc.ca Frank Warmerdam <[email protected]> 21/07/2009 11:53 AM A [email protected] cc [email protected] Objet Re: [gdal-dev] Messages: gdal_translate and gdal_rasterize [email protected] wrote: > > Hello!!! > When I launch this command > gdal_translate -projwin -428734.998712 20337 1.497532 -387578.449250 > 172036.180727 EstMtl.img rssMtl.img > > I get this message > Input file size is 7771, 7410 > Computed -srcwin 1204 4838 1372 1045 from projected window. > 0Warning 1: Lost metadata writing to GeoTIFF ... too large to fit in tag. > Warning 1: Lost metadata writing to GeoTIFF ... too large to fit in tag. > ...10...20...30...40...50...60...70...80...90...100 - done. > Warning 1: Lost metadata writing to GeoTIFF ... too large to fit in tag. Steve, First, you may not be aware that gdal_translate writes TIFF by default, even if you use the extension .img. So if you want a .img output you would need to specify -of HFA on the commandline. The warning indicates that there was too much metadata in the source file to properly store in the GeoTIFF so it was discarded. Often this won't matter to you. > When I launch this command > gdal_rasterize -burn 0 -i -l rssMtl_32198 > Z:\MSSS\rssmrn\2005\shapefile\32198\rssMtl_32198.shp rssMtl.img > > I get this message > Warning : the output raster dataset has a SRS, but the input vector > layer not. Results will be probably incorrect. > 0...10...20...30...40...50...60...70...80...90...100 - done. This means it is your responsibility to ensure that the shapefile and the .img file are in the same coordinate system since the command cannot determine it from the .shp file. The warning is perhaps a bit too dramatic. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, [email protected] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent
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