Created
February 12, 2014 19:25
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Convert lat/lon to tile number
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| import math | |
| def lat_lon_to_tile(lat_deg, lon_deg, zoom): | |
| def sec(x): | |
| return 1/math.cos(x) | |
| lat_rad = math.radians(lat_deg) | |
| n = 2**zoom | |
| xtile = n * ((lon_deg + 180) / 360) | |
| ytile = n * (1 - (math.log(math.tan(lat_rad) + sec(lat_rad)) / math.pi)) / 2 | |
| return int(xtile), int(ytile) |
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