Class: SoraGeocoding::Geohash

Inherits:

Base

• Object
• Base
• SoraGeocoding::Geohash

Defined in:

lib/sora_geocoding/geohash.rb

Overview

generate Geohash

• https://ja.wikipedia.org/wiki/%E3%82%B8%E3%82%AA%E3%83%8F%E3%83%83%E3%82%B7%E3%83%A5

Constant Summary

BASE32 =

'0123456789bcdefghjkmnpqrstuvwxyz'.freeze

REFINED_RANGE =

[[-90, 90], [-180, 180]].freeze

Instance Method Summary

• #encode ⇒ Object
• #initialize(lat, lon) ⇒ Geohash constructor

  A new instance of Geohash.

Methods inherited from Base

#configuration, #handle, #raise_error

Constructor Details

#initialize(lat, lon) ⇒ Geohash

Returns a new instance of Geohash.

# File 'lib/sora_geocoding/geohash.rb', line 13

def initialize(lat, lon)
  @lat = lat.to_s
  @lon = lon.to_s
end

Instance Method Details

#encode ⇒ Object

# File 'lib/sora_geocoding/geohash.rb', line 18

def encode
  calc_geohash(
    convert_byte(@lat, REFINED_RANGE[0][0], REFINED_RANGE[0][1], range(@lat)),
    convert_byte(@lon, REFINED_RANGE[1][0], REFINED_RANGE[1][1], range(@lon))
  )
end