Le mercredi 20 mai 2015 16:54:53, Nicolas Cadieux a écrit : > Hi, > The problem with gdal_merge seems to be with the input parameters I used to > deflate the file. Locks at 4GB file size. Cheers
You may need to explcitely add -co BIGTIFF=YES when generating compressed TIFF that will be larger than 4GB. The GeoTIFF driver has a heuristics to determine if a bigtiff file must be generated or not, but it's not bullet-proof. In recent versions (GDAL 1.11 and above likely) you should get an error message "Maximum TIFF file size exceeded. Use BIGTIFF=YES creation option." > Nicolas Cadieux M.Sc. > Les Entreprises Archéotec inc.  > 8548, rue Saint-Denis Montréal H2P 2H2 > Téléphone: 514.381.5112  Fax: 514.381.4995 > www.archeotec.ca > On May 19, 2015 12:01, "Even Rouault-2 [via OSGeo.org] " > <[email protected]> wrote: > > Le mardi 19 mai 2015 17:58:33, [hidden email] a écrit : > > Hi, > > It seems that both gdal_contour and gdal_merge in QGIS 2.6 and 2.8 > (both > 64bit windows installs on Windows 7_64) are still in 32 bit. > Both stop > when output files hit 4 194 304KB (.tiff or .shp) Is there > a way around > those limitations? > 32 or 64-bit builds should have no influence on the limitation of output > files. A 32-bit build can certainly handle files > 4 GB. > .shp are limited to 2GB due to the format anyway. > .tif might be limited to 4 GB with libtiff 3, but are no longer limited > with libtiff 4 with BIGTIFF enabled. > > Thanks > > Nicolas > > _______________________________________________ > > Qgis-user mailing list > > [hidden email] > > http://lists.osgeo.org/mailman/listinfo/qgis-user -- > Spatialys - Geospatial professional services > http://www.spatialys.com _______________________________________________ > Qgis-user mailing list > [hidden email] > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > > > > > > If you reply to this email, your message will be added to the discussion > below: > http://osgeo-org.1560.x6.nabble.com/32bit-gdal-gdal-modules-tp5206472p5206 > 474.html > > > To start a new topic under Quantum GIS - User, email > ml-node+s1560n4125267h38@n6.nabble.com To unsubscribe from Quantum > GIS - User, click here . > NAML > > > > > -- > View this message in context: > http://osgeo-org.1560.x6.nabble.com/32bit-gdal-gdal-modules-tp5206472p5206 > 669.html Sent from the Quantum GIS - User mailing list archive at > Nabble.com. -- Spatialys - Geospatial professional services http://www.spatialys.com _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
