David, Some formats support identifying a particular pixel value as nodata and some do not. When they don't and you write nodata, we usually try to store the information in an .aux.xml file (auxilary metadata) which at least GDAL based applications would recognise.
Best regards, Frank On Fri, Apr 13, 2012 at 12:07 PM, David Strip <[email protected]> wrote: > What data formats besides geotiff support a NODATA value? Is there a > uniform GDAL approach to determining the NODATA value or otherwise > determining if a pixel is a NODATA pixel? I know that this value is stored > in a geotiff tag, but that won't work for other formats. > > > > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev -- ---------------------------------------+-------------------------------------- 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
