[gdal-dev] Unable to Rotate Image uisng setGeoTransform

[Pratap Chelamilla]

Hi,

How to rotate an image with different angles(such as 30 ,45 60 .....
degress) using SetGeoTransform?

I have tried setting newTie[2] =45 degree  and  newTie[2] =
(45.0*3.1415926)/180) in radians

 double *newTie = new double[6];

            newTie[0] = tie[0] + (xPos*tie[1]);              /*
adfGeoTransform[0] /* top left x */
            newTie[3] = tie[3] + (yPos*tie[5]);             /*
adfGeoTransform[3] /* top left y */
            newTie[1] = tie[1];                         /*
adfGeoTransform[1] /* w-e pixel resolution */
            newTie[2] = 45.0;                         /* adfGeoTransform[2]
/* rotation, 0 if image is "north up" */
            newTie[4] = 45.0;                     /*    adfGeoTransform[4]
/* rotation, 0 if image is "north up" */
            newTie[5] = tie[5];                  /*   adfGeoTransform[5] /*
n-s pixel resolution */


But,SetGeoTransform is not affecting any change on image after writing with
RasterIO (unable to see any rotated image),Image is georeferenced.

What values should I use for  adfGeoTransform[2]/newTie[2] and
adfGeoTransform[4]/newTie[4]?

Thanks,
Pratap.
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