Class: Geokit::Geocoders::GeonamesGeocoder

Inherits:
Geocoder
  • Object
show all
Defined in:
lib/geokit/geocoders.rb

Overview

Another geocoding web service www.geonames.org

Class Method Summary collapse

Methods inherited from Geocoder

call_geocoder_service, do_reverse_geocode, geocode, reverse_geocode

Class Method Details

.cities_in_bounds(bounds) ⇒ Object 



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# File 'lib/geokit/geocoders.rb', line 374

def self.cities_in_bounds(bounds)
  params = "/cities?north=#{bounds.ne.lat}&south=#{bounds.sw.lat}&east=#{bounds.ne.lng}&west=#{bounds.sw.lng}"

  self.do_call_geocoder_service(bounds.to_s, params) do |res, doc|
    if doc.elements['//geonames/geoname']
      # only take the first result
      first = doc.elements['//geonames/geoname']
      res.lat = first.elements['lat'].text
      res.lng = first.elements['lng'].text
      res.city = res.name = first.elements['name'].text
      res.country_code = first.elements['countryCode'].text if first.elements['countryCode']
      res.provider='geonames'
      res.success = true
    end
  end
end

.search(address, options = {}) ⇒ Object

Returns result from geonames’ search webservice



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# File 'lib/geokit/geocoders.rb', line 339

def self.search(address, options = {})
  params = "/search?q=#{Geokit::Inflector::url_escape(address_string(address))}"
  params << "&continentCode=#{options[:continent]}" if options[:continent]
  if options[:feature_class]
    Array(options[:feature_class]).each do |fc|
      params << "&featureClass=#{fc}"
    end
  end
  if options[:feature_code]
    Array(options[:feature_code]).each do |fc|
      params << "&featureCode=#{fc}"
    end
  end
  params << "&style=FULL"
  params << "&maxRows=10"
  
  self.do_call_geocoder_service(address, params) do |res, doc|
    if(doc.elements['//geonames/totalResultsCount'].text.to_i > 0)
      # only take the first result
      res.lat=doc.elements['//geoname/lat'].text if doc.elements['//geoname/lat']
      res.lng=doc.elements['//geoname/lng'].text if doc.elements['//geoname/lng']
      res.name = doc.elements['//geoname/name'].text if doc.elements['//geoname/name']
      res.country_code=doc.elements['//geoname/countryCode'].text if doc.elements['//geoname/countryCode']
      res.provider='geonames'
      # if the location is a city or village
      if doc.elements['//geoname/fcl'].text == 'P'
        res.city=res.name
      end
      res.state=doc.elements['//geoname/adminCode1'].text if doc.elements['//geoname/adminCode1']
      res.timezone = doc.elements['//geoname/timezone'].text if doc.elements['//geoname/timezone']
      res.success=true
    end
  end
end