[gdal-dev] GeoTiff and the 4th band

[Even Rouault]

Selon Nicolas Mayer <nmayer31000 at gmail.com>:

> Even, Thank you very much !
>
> With the two creation options : PHOTOMETRIC=RGB and ALPHA=NO, I obtain the
> same behaviour I whish.
>
> Can you explain me where you found this answer ? (to help me to become more
> autonomous with GDAL)
>

Well, for an advanced question like this... by looking directly at the logic
exposed in the source code : between the lines 6809 and 6960 of
http://trac.osgeo.org/gdal/export/22203/trunk/gdal/frmts/gtiff/geotiff.cpp