[email protected] wrote:
Hi list,I've got a tiff file of 28 Mb and it is really slow, so I am assuming the classification gets applied on the fly or something like that. If I do a gdalinfo I get a huge list of STATISTICS_HISTOBINVALUES Metadata: STATISTICS_MINIMUM=-5838 STATISTICS_MAXIMUM=4225 STATISTICS_MEAN=-1010.4585191036 STATISTICS_MEDIAN=-212 STATISTICS_MODE=1 STATISTICS_STDDEV=1833.0113850333 LAYER_TYPE=athematic STATISTICS_HISTOBINVALUES=1|1|1|1|1|1|1|1|1|1|1|2|1|2|1|1|1|2|1|1|1|1....... Also, the GDALRasterAttributeTable has 9150 rows. Don't know if this is related. Any ideas on how to speed this up? I tried to write it out to a new GeoTiff or MrSID file, but somehow all this info is preserved, and the slowness continues.
Bart, Could you provide the dataset? I'd be interested in reviewing the performance of the raster attribute table logic with an eye towards optimizing it. 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 _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
