def MetersToTile(self, mx, my, zoom):
		
		px, py = self.MetersToPixels( mx, my, zoom)
		return self.PixelsToTile( px, py)
Returns tile for given mercator coordinates
dataset/ETHPy150Open Ecotrust/create-utfgrids/globalmaptiles.py/GlobalMercator.MetersToTile