Converting Coordinate Systems?

This issue has been sleeping here for long, but this might help some googler:

For a similar task I simplified the functions from the website that you mention to the following, it works fine for me (in Python):

def LatLonToPixels(lat, lon, zoom): tileSize = 256 sinLat = math.sin(float(lat) * (math.pi/180)) py = (0.5 - math.log((1 + sinLat) / (1 - sinLat)) / (4 * math.pi)) * tileSize * 2**float(zoom) px = ((float(lon) + 180) / 360) * tileSize * 2**float(zoom) return px, py def PixelsToTile(px, py, service): tileSize = 256 tx = int( math.ceil( px / float(tileSize) ) - 1 ) ty = int( math.ceil( py / float(tileSize) ) - 1 ) return tx, ty 

These two functions are very straightforward to use (less to get the maths behind it). You simply need to use the first one to get the coordinates in pixel of your longitude and latitude, and the second one to compute on which tile it is located.

The Bing help documents are really helpfull, have a look!

The PyPi package pyGeoTile simplifies this task.

from pygeotile.tile import Tile tile = Tile.from_google(google_x=10, google_y=24, zoom=6) point_min, point_max = tile.bounds print(point_min.meters) print(point_max.meters) 

For more information have a look at the Github Repo: https://github.com/geometalab/pyGeoTile