Hi All, If I know the co-ordinates for all 4 corners of a non-north-up image, how can I calculate the 6 GDAL affine transform parameters? Cheers, Fodder -- View this message in context: http://www.nabble.com/GDAL-affine-transform-Non-North-Up-tp21087047p21087047.html Sent from the GDAL - Dev mailing list archive at Nabble.com.