[gdal-dev] Re: several No data value

2010-12-10 Thread ludovic
Thanks Frank for these remarks. I work on pds driver (in fact the subdriver ISIS2). I agree with you that "some folks would want to distinguish the various kinds of nodata values". And it's the reason i would like the default behaviour is "we have various no data value" but we can add a flag opti

Re: [gdal-dev] Re: several No data value

2010-12-08 Thread Frank Warmerdam
On 10-12-06 09:53 AM, ludovic wrote: Frank, thanks for your response : On 3 déc, 22:05, Frank Warmerdam wrote: GDAL only supports single nodata values as part of the data model. You can add arbitrary metadata describing other nodata values, but generally GDAL itself and other client softwar

[gdal-dev] Re: several No data value

2010-12-06 Thread ludovic
Frank, thanks for your response : On 3 déc, 22:05, Frank Warmerdam wrote: > > GDAL only supports single nodata values as part of the data model. You > can add arbitrary metadata describing other nodata values, but generally > GDAL itself and other client software won't realize the significance