#426: Geohashing

Date (example): 2005-05-26

That date’s (or most recent) DOW opening: 10458.68

[[Concatenate, with a hyphen: 2005-05-26-10458.68]]

md5: db9318c2259923d08b672cb305440f97

[[Split it up into two pieces:]]

0.db9318c2259923d0, 0.8b672cb305440f97

To decimal: 0.857713…, 0.544544…

Your location (example): 37.421542, -122.085589

[[Combine integer part of location with fractional part of hash:]]

Destination Coordinates: 37.857713, -122.544544

Sample Implementation: http:

xkcd.com

geohashing