Description of parameters of GDAL SetGeoTransform -


can me parameters setgeotransform? i'm creating raster layers gdal, can't find description of 3rd , 5th parameter setgeotransform. should definition of x , y axis cells. try find here , here, nothing.

i need find description of these 2 parameters... it's value in degrees, radians, meters? or else?

the geotransform used convert map pixel coordinates , using affine transformation. 3rd , 5th parameter used (together 2nd , 4th) define rotation if image doesn't have 'north up'.

but images north up, , both 3rd , 5th parameter zero.

the affine transform consists of 6 coefficients returned gdaldataset::getgeotransform() map pixel/line coordinates georeferenced space using following relationship:

xgeo = gt(0) + xpixel*gt(1) + yline*gt(2) ygeo = gt(3) + xpixel*gt(4) + yline*gt(5) 

see section on affine geotransform at: http://www.gdal.org/gdal_datamodel.html


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