geohash

Geohash encode/decode library for pure Crystal.

A geohash is a convenient way of expressing a location (anywhere in the world) using a short alphanumeric string, with greater precision obtained with longer strings.

Installation

1. Add the dependency to your shard.yml:

   dependencies:
     geohash:
       github: geocrystal/geohash
   

2. Run shards install

Usage

require "geohash"

Geohash.encode(48.669, -4.329, 5) # => "gbsuv"
Geohash.decode("gbsuv") # => {lat: 48.669, lng: -4.329}

Geohash.neighbors("gbsuv")
# =>{n: "gbsvj", ne: "gbsvn", e: "gbsuy", se: "gbsuw", s: "gbsut", sw: "gbsus", w: "gbsuu", nw: "gbsvh"}
#
# Neighbors:
# gbsvh	gbsvj gbsvn
# gbsuu	gbsuv gbsuy
# gbsus	gbsut gbsuw

Geohash.bounds("gbsuv")
# => {sw: {lat: 48.6474609375, lng: -4.3505859375}, ne: {lat: 48.69140625, lng: -4.306640625}}

https://www.movable-type.co.uk/scripts/geohash.html

Contributing

1. Fork it (https://github.com/geocrystal/geohash/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• Anton Maminov - creator and maintainer