On Thu, Apr 26, 2012 at 10:42 AM, Richard Nicoll <[email protected]> wrote: > Hi guys > > I am new to using GDAL so apologies if this is a silly question! > > When using the gdaladdo to create GeoTIFF pyramid layers (overviews), > can the levels values be decimal values, or do they have to be > integers? I have tried using decimals (e.g. 4.3) since this will > produce an overview at the exact required scale for the viewing app, > however GDAL appears to be rounding up/down to the closest whole > number!
Richard, I can confirm that the BuildOverviews() api only supports integer overview levels. I do believe that GDAL can support reading overviews, even at non-integer overview levels, but not create them. 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 Software Developer _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
