Could you append the output of gdalinfo on the TIF you make overviews on and the exact gdaladdo you're using (mainly if you use one particular resampling algorithm) ?
Le Tuesday 09 February 2010 22:57:26 David Fogel, vous avez écrit : > Hi: > > In the process of moving data into GeoTIFF, I am re-creating pyramids > (OVR files). The good news: It takes fewer than ten minutes to create > an LZW Horizontal Differenced compressed 3.5 GB file on a Windows 7 > box using GDAL 1.70+ ( via Tamas Szekeres site; 64-bit precompiled ). > > The OVR files are problematic. Using gdal_translate, I can resize by > 50% in less than ten minutes. Using gdaladdo, the first layer ( "2" ) > takes hours to complete. > > This is for SRTM 16-bit data. It appears that something is amiss. > > Tips and tricks? > > Thanks! > = David > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
