Class: DefraRuby::Address::LatLonToEastingNorthingService

Inherits:
BaseService
  • Object
show all
Defined in:
lib/defra_ruby/address/services/lat_lon_to_easting_northing_service.rb

Overview

Converts a WGS84 latitude and longitude to a British National Grid easting and northing. Accurate to around 5 metres.

Instance Method Summary collapse

Methods inherited from BaseService

run

Instance Method Details

#run(latitude, longitude) ⇒ Object 



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# File 'lib/defra_ruby/address/services/lat_lon_to_easting_northing_service.rb', line 8

def run(latitude, longitude)
  osgb36_latitude, osgb36_longitude = HelmertTransformation.wgs84_to_osgb36(
    Float(latitude), Float(longitude)
  )
  easting, northing = TransverseMercatorProjection.lat_lon_to_easting_northing(
    osgb36_latitude, osgb36_longitude
  )

  { easting: easting, northing: northing }
end