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geobabbler/worlddfile.py

Last active August 29, 2015 14:00
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Function to generate world file parameters for any TMS tile. Useful for building virtual rasters. Add to globalmaptiles.py
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worlddfile.py
def WorldFileParameters(self, tx, ty, zoom):
"Returns world file (affine transofrmation) parameters of the given tile."
bounds = self.TileBounds( tx, ty, zoom)
moriginx = bounds[3] + (self.Resolution(zoom) / 2)
moriginy = bounds[0] - (self.Resolution(zoom) / 2)
return (self.Resolution(zoom), 0.0, 0.0, self.Resolution(zoom) * -1, moriginy, moriginx)
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