Geohash

Geohash encoder/decoder implementation for Elixir.

Installation

Add :geohash to your list of dependencies in mix.exs:

def deps do
  [
    {:geohash, "~> 1.0"}
  ]
end

Ensure :geohash is started before your application:

def application do
  [
    applications: [:geohash]
  ]
end

Usage

Encode coordinates with Geohash.encode(lat, lon, precision \\ 11):

Geohash.encode(42.6, -5.6, 5)
# "ezs42"

Decode coordinates with Geohash.decode(geohash):

Geohash.decode("ezs42")
# {42.605, -5.603}

Find neighbors:

Geohash.neighbors("abx1")
# %{"n" => "abx4",
#   "s" => "abx0",
#   "e" => "abx3",
#   "w" => "abwc",
#   "ne" => "abx6",
#   "se" => "abx2",
#   "nw" => "abwf",
#   "sw" => "abwb"}

Find adjacent:

Geohash.adjacent("abx1","n")
# "abx4"

Get bounds:

Geohash.bounds("u4pruydqqv")
# %{min_lon: 10.407432317733765, min_lat: 57.649109959602356, max_lon: 10.407443046569824, max_lat: 57.649115324020386}

Copyright and License

Copyright (c) 2015 Pablo Mouzo

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.