The Algorithm

The Algorithm

This time, we did invent the algorithm!

1. The current date (in yyyy-mm-dd format) and the daily opening price of the Dow Jones Industrial Average are concatenated with a hyphen and fed through the MD5 cryptographic algorithm to generate as pseudo-random string of 32 hexadecimal digits.
   1. If there is no opening price for the Dow, the opening price from its previous day of active trading is used instead.
2. The resulting string is split into two halves of 16 hexadecimal digits.
3. Each half-string is prepended with a decimal point (so as to represent a hexadecimal fraction) and is converted to a base-10 fraction.
4. The resulting decimal fractions are appended to the integral (lat,lon) values of any given graticule to produce that graticule's geohash target.

Fractional hexadecimal to decimal calculation

Many online hex-to-dec converters do not support hexadecimal fractions. Here is one that does:

• EasySurf.cc