On Tue, Jun 10, 2014 at 6:28 AM, Even Rouault <[email protected]> wrote: > >> Thanks, that makes sense. However, the result is somehow surprising and I >> guess that in most cases unusable for the user. I wonder if it would be good >> to print something like "WARNING. Encountered 4 source bands, assuming CMYC >> color space". Behaviour is not very easy to understand by reading the driver >> page http://www.gdal.org/frmt_jpeg.html >> >> When I try to look at the situation as a QGIS user sees it, it feels like >> there is a bug somewhere but I can't say exactly where. However, I do not >> believe that any average QGIS user can have success with converting their >> RGBA tiffs into jpeg format even it is possible by editing gdal_translate >> command manually. > > Agreed that the current behaviour is confusing. A check could be done on the > color interpretation of the source bands to check if it is C,M,Y,K when a 4 > band > dataset is provided. If not, then output the warning (and possibly error out > if > -strict is specified)
Some GDAL warning also give helpful hints. Could this warning suggest something like, RGBA files can be converted to JPEG by adding "-b 1 -b 2 -b 3"? Eli > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
