= geohex * http://geohex.rubyforge.org/ ## GEOHEX DESCRIPTION GeoHex Gem for Ruby (c) 2009 Haruyuki Seki http://twitter.com/hal_sk_e (en) http://twitter.com/hal_sk (ja) * The GeoHex is a latitude/longitude encoding system invented by sa2da. * GeoHex divides geometry regions into hexagonal grid and set an unique identifier to each grid. It supports only Japan region so far. * The coding idea is ope