Class: Geokit::GeoLoc

Inherits:
LatLng
  • Object
show all
Defined in:
lib/geokit/mappable.rb

Overview

This class encapsulates the result of a geocoding call. It’s primary purpose is to homogenize the results of multiple geocoding providers. It also provides some additional functionality, such as the “full address” method for geocoders that do not provide a full address in their results (for example, Yahoo), and the “is_us” method.

Some geocoders can return multple results. Geoloc can capture multiple results through its “all” method.

For the geocoder setting the results, it would look something like this:

geo=GeoLoc.new(first_result)
geo.all.push(second_result)
geo.all.push(third_result)

Then, for the user of the result:

puts geo.full_address     # just like usual
puts geo.all.size  => 3   # there's three results total
puts geo.all.first        # all is just an array or additional geolocs, 
                            so do what you want with it

Constant Summary

Constants included from Mappable

Mappable::EARTH_RADIUS_IN_KMS, Mappable::EARTH_RADIUS_IN_MILES, Mappable::EARTH_RADIUS_IN_NMS, Mappable::KMS_PER_LATITUDE_DEGREE, Mappable::KMS_PER_MILE, Mappable::LATITUDE_DEGREES, Mappable::MILES_PER_LATITUDE_DEGREE, Mappable::NMS_PER_LATITUDE_DEGREE, Mappable::NMS_PER_MILE, Mappable::PI_DIV_RAD

Instance Attribute Summary collapse

Attributes inherited from LatLng

#lat, #lng

Instance Method Summary collapse

Methods inherited from LatLng

#==, #eql?, #ll, normalize, #to_a

Methods included from Mappable

#distance_to, #endpoint, #heading_from, #heading_to, included, #midpoint_to, #to_lat_lng

Constructor Details

#initialize(h = {}) ⇒ GeoLoc

Constructor expects a hash of symbols to correspond with attributes.



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# File 'lib/geokit/mappable.rb', line 333

def initialize(h={})
  @all = [self]
  
  @street_address=h[:street_address] 
  @city=h[:city] 
  @state=h[:state] 
  @zip=h[:zip] 
  @country_code=h[:country_code] 
  @success=false
  @precision='unknown'
  @full_address=nil
  super(h[:lat],h[:lng])
end

Instance Attribute Details

#accuracy ⇒ Object

accuracy is set for Yahoo and Google geocoders, it is a numeric value of the precision. see code.google.com/apis/maps/documentation/geocoding/#GeocodingAccuracy



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# File 'lib/geokit/mappable.rb', line 330

def accuracy
  @accuracy
end

#all ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US



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# File 'lib/geokit/mappable.rb', line 321

def all
  @all
end

#city ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US



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# File 'lib/geokit/mappable.rb', line 321

def city
  @city
end

#country_code ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US



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# File 'lib/geokit/mappable.rb', line 321

def country_code
  @country_code
end

#full_address ⇒ Object

full_address is provided by google but not by yahoo. It is intended that the google geocoding method will provide the full address, whereas for yahoo it will be derived from the parts of the address we do have.



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# File 'lib/geokit/mappable.rb', line 321

def full_address
  @full_address
end

#precision ⇒ Object

Attributes set upon return from geocoding. Success will be true for successful geocode lookups. The provider will be set to the name of the providing geocoder. Finally, precision is an indicator of the accuracy of the geocoding.



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# File 'lib/geokit/mappable.rb', line 325

def precision
  @precision
end

#provider ⇒ Object

Attributes set upon return from geocoding. Success will be true for successful geocode lookups. The provider will be set to the name of the providing geocoder. Finally, precision is an indicator of the accuracy of the geocoding.



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# File 'lib/geokit/mappable.rb', line 325

def provider
  @provider
end

#state ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US



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# File 'lib/geokit/mappable.rb', line 321

def state
  @state
end

#street_address ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US



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# File 'lib/geokit/mappable.rb', line 321

def street_address
  @street_address
end

#street_name ⇒ Object (readonly)

Returns the street name portion of the street address.



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# File 'lib/geokit/mappable.rb', line 327

def street_name
  @street_name
end

#street_number ⇒ Object (readonly)

Extracts the street number from the street address if the street address has a value.



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# File 'lib/geokit/mappable.rb', line 327

def street_number
  @street_number
end

#success ⇒ Object

Attributes set upon return from geocoding. Success will be true for successful geocode lookups. The provider will be set to the name of the providing geocoder. Finally, precision is an indicator of the accuracy of the geocoding.



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# File 'lib/geokit/mappable.rb', line 325

def success
  @success
end

#zip ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US



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# File 'lib/geokit/mappable.rb', line 321

def zip
  @zip
end

Instance Method Details

#hash ⇒ Object Also known as: to_hash

gives you all the important fields as key-value pairs



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# File 'lib/geokit/mappable.rb', line 375

def hash
  res={}
  [:success,:lat,:lng,:country_code,:city,:state,:zip,:street_address,:provider,:full_address,:is_us?,:ll,:precision].each { |s| res[s] = self.send(s.to_s) }
  res
end

#is_us? ⇒ Boolean

Returns true if geocoded to the United States.

Returns:

  • (Boolean) 


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# File 'lib/geokit/mappable.rb', line 348

def is_us?
  country_code == 'US'
end

#success? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/geokit/mappable.rb', line 352

def success?
  success == true
end

#to_geocodeable_s ⇒ Object

Returns a comma-delimited string consisting of the street address, city, state, zip, and country code. Only includes those attributes that are non-blank.



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# File 'lib/geokit/mappable.rb', line 394

def to_geocodeable_s
  a=[street_address, city, state, zip, country_code].compact
  a.delete_if { |e| !e || e == '' }
  a.join(', ')      
end

#to_s ⇒ Object

Returns a string representation of the instance.



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# File 'lib/geokit/mappable.rb', line 405

def to_s
  "Provider: #{provider}\n Street: #{street_address}\nCity: #{city}\nState: #{state}\nZip: #{zip}\nLatitude: #{lat}\nLongitude: #{lng}\nCountry: #{country_code}\nSuccess: #{success}"
end

#to_yaml_properties ⇒ Object 



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# File 'lib/geokit/mappable.rb', line 400

def to_yaml_properties
  (instance_variables - ['@all']).sort
end