* In a north up image, geoTransformArray[1] is the pixel width, and geoTransformArray[5] is the pixel height. The upper left corner of the upper left pixel is at position (geoTransformArray[0],geoTransformArray[3]).
* The default transform is (0,1,0,0,0,1) and should be returned even when an error occurs, such as for formats that don't support transformation to projection coordinates.