On Thursday 20 August 2015 16:47:16 Andrea Peri wrote: > Hi, > > I need to retrieve the histogram of a set of rasters. > To do this I use the > gdalinfo for every raster using the parameter "-hist". > > But this process take a long time because the rasters are huge and > have 11 bands each of them. > > For my need the histogram informations should be sufficient at a > middle level pyramid. > > So my question is if is possible with gdalinfo create the histogram > from an intermediate pyramid level.
Not directly. At the API level, it is possible to require for approximate histogram (and this will select a overview level that is close to 1 / 50 th of the original raster size. Otherwise a trick would be to extract the desired overview level with gdal_translate -outsize (possibly as a VRT) and run gdalinfo -hist on it > > Thx for any hints. -- Spatialys - Geospatial professional services http://www.spatialys.com _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
