Hi Akos, gdaladdo doesn't generate any extra files - it just stores the pyramids in the original tiff file. if you issue the command for the first time you will notice an increased file size.
cheers, matthias Am 14.11.2011 14:35, schrieb Ákos Maróy: > Matthias, > >> This gdal command mosaics all SRTM-Tiles into on bi geotiff. This is >> what I use for SRTM-Display. Performance is good (equla to using tiles), >> and you don't need to care about managing all the tiles on your server: >> >> >> gdal_merge -of GTiff -co "TILED=YES" -co "COMPRESS=LZW" -co >> "BIGTIFF=YES" -ot Int16 -n -32768 -v -o srtm41.tif tiff/*.tif >> >> >> Make sure, you have all your srtm tiles downloaded and stored in ./tiff. > > thanks for the tip, this worked (after initiall converting the original > .hgt.zip files into GeoTIFF). I got a large GeoTIFF file, which is a > BigTIFF file, thus I can't look at it using conventional Linux tools > (like eog or gimp) as they all complain about not having BigTIFF support :) > >> The command created a 16-bit image, compresses it, applies tiling and >> all the good stuff. >> >> >> You also want to build overviews for display speed, so issue this >> command subsequently: >> >> gdaladdo -r cubic srtm41.tif 4 8 16 32 64 128 256 512 >> >> This will create the image pyramids srtm41.tif . > > this does not seem to work for me - simply doesn't generate any files: > > $ ls > srtm41.tif > $ gdaladdo -r cubic srtm41.tif 4 8 16 32 64 128 256 512 > 0...10...20...30...40...50...60...70...80...90...100 - done. > $ ls > srtm41.tif > > I'm using gdal 1.7.3: > > $ gdaladdo --version > GDAL 1.7.3, released 2010/11/10 > > would I need a newer version? > > > Akos > > ------------------------------------------------------------------------------ > RSA(R) Conference 2012 > Save $700 by Nov 18 > Register now > http://p.sf.net/sfu/rsa-sfdev2dev1 > _______________________________________________ > Geoserver-users mailing list > Geoserver-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geoserver-users ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Geoserver-users mailing list Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users
