Hi,
I'm trying to wrap my head around how gdal handles nodata values.
In an image with this gdalinfo exceprt:
Band 1 Block=512x512 Type=Byte, ColorInterp=Red
NoData Value=0
Band 2 Block=512x512 Type=Byte, ColorInterp=Green
NoData Value=0
Band 3 Block=512x512 Type=Byte, ColorInterp=Blue
NoDat
Le mercredi 18 juin 2014 18:35:49, Andrea Aime a écrit :
> Hi,
> I'm trying to wrap my head around how gdal handles nodata values.
> In an image with this gdalinfo exceprt:
>
> Band 1 Block=512x512 Type=Byte, ColorInterp=Red
> NoData Value=0
> Band 2 Block=512x512 Type=Byte, ColorInterp=Green
>
Even Rouault mines-paris.org> writes:
> This is a rather tricky area indeed.
>
> A few facts :
> - The concept of nodata value in GDAL is something per band, which leave
> multi-band processing of nodata values subject to interpretation.
> - The TIFFTAG_GDAL_NODATA extension tag in TIFF only ho