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, #reverse_geocode, #to_a, #valid?

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.



373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
 
# File 'lib/geokit/mappable.rb', line 373

def initialize(h={})
  @all = [self]

  @street_address=h[:street_address]
  @sub_premise=nil
  @street_number=nil
  @street_name=nil
  @city=h[:city]
  @state=h[:state]
  @zip=h[:zip]
  @country_code=h[:country_code]
  @province = h[:province]
  @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



367
368
369
 
# File 'lib/geokit/mappable.rb', line 367

def accuracy
  @accuracy
end

#all ⇒ Object

Returns the value of attribute all.



360
361
362
 
# File 'lib/geokit/mappable.rb', line 360

def all
  @all
end

#block_fips ⇒ Object

FCC Attributes



369
370
371
 
# File 'lib/geokit/mappable.rb', line 369

def block_fips
  @block_fips
end

#city ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US Street number and street name are extracted from the street address attribute if they don’t exist



359
360
361
 
# File 'lib/geokit/mappable.rb', line 359

def city
  @city
end

#country ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US Street number and street name are extracted from the street address attribute if they don’t exist



359
360
361
 
# File 'lib/geokit/mappable.rb', line 359

def country
  @country
end

#country_code ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US Street number and street name are extracted from the street address attribute if they don’t exist



359
360
361
 
# File 'lib/geokit/mappable.rb', line 359

def country_code
  @country_code
end

#district ⇒ Object

Returns the value of attribute district.



360
361
362
 
# File 'lib/geokit/mappable.rb', line 360

def district
  @district
end

#district_fips ⇒ Object

FCC Attributes



369
370
371
 
# File 'lib/geokit/mappable.rb', line 369

def district_fips
  @district_fips
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.



403
404
405
 
# File 'lib/geokit/mappable.rb', line 403

def full_address
  @full_address
end

#neighborhood ⇒ Object

Returns the value of attribute neighborhood.



360
361
362
 
# File 'lib/geokit/mappable.rb', line 360

def neighborhood
  @neighborhood
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.



364
365
366
 
# File 'lib/geokit/mappable.rb', line 364

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.



364
365
366
 
# File 'lib/geokit/mappable.rb', line 364

def provider
  @provider
end

#province ⇒ Object

Returns the value of attribute province.



360
361
362
 
# File 'lib/geokit/mappable.rb', line 360

def province
  @province
end

#state ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US Street number and street name are extracted from the street address attribute if they don’t exist



359
360
361
 
# File 'lib/geokit/mappable.rb', line 359

def state
  @state
end

#state_fips ⇒ Object

FCC Attributes



369
370
371
 
# File 'lib/geokit/mappable.rb', line 369

def state_fips
  @state_fips
end

#street_address ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US Street number and street name are extracted from the street address attribute if they don’t exist



359
360
361
 
# File 'lib/geokit/mappable.rb', line 359

def street_address
  @street_address
end

#street_name ⇒ Object

Returns the street name portion of the street address where possible



359
360
361
 
# File 'lib/geokit/mappable.rb', line 359

def street_name
  @street_name
end

#street_number ⇒ Object

Extracts the street number from the street address where possible.



359
360
361
 
# File 'lib/geokit/mappable.rb', line 359

def street_number
  @street_number
end

#sub_premise ⇒ Object

Returns the value of attribute sub_premise.



360
361
362
 
# File 'lib/geokit/mappable.rb', line 360

def sub_premise
  @sub_premise
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.



364
365
366
 
# File 'lib/geokit/mappable.rb', line 364

def success
  @success
end

#suggested_bounds ⇒ 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.



364
365
366
 
# File 'lib/geokit/mappable.rb', line 364

def suggested_bounds
  @suggested_bounds
end

#zip ⇒ Object

Location attributes. Full address is a concatenation of all values. For example: 100 Spear St, San Francisco, CA, 94101, US Street number and street name are extracted from the street address attribute if they don’t exist



359
360
361
 
# File 'lib/geokit/mappable.rb', line 359

def zip
  @zip
end

Instance Method Details

#encode_with(coder) ⇒ Object 



455
456
457
458
459
 
# File 'lib/geokit/mappable.rb', line 455

def encode_with(coder)
  to_yaml_properties.each do |name|
    coder[name[1..-1].to_s] = instance_variable_get(name.to_s)
  end
end

#hash ⇒ Object Also known as: to_hash

gives you all the important fields as key-value pairs



420
421
422
423
424
425
426
 
# File 'lib/geokit/mappable.rb', line 420

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

#is_us? ⇒ Boolean

Returns true if geocoded to the United States.

Returns:

  • (Boolean) 


392
393
394
 
# File 'lib/geokit/mappable.rb', line 392

def is_us?
  country_code == 'US'
end

#success? ⇒ Boolean

Returns:

  • (Boolean) 


396
397
398
 
# File 'lib/geokit/mappable.rb', line 396

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.



445
446
447
448
449
 
# File 'lib/geokit/mappable.rb', line 445

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

#to_s ⇒ Object

Returns a string representation of the instance.



462
463
464
 
# File 'lib/geokit/mappable.rb', line 462

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

#to_yaml_properties ⇒ Object 



451
452
453
 
# File 'lib/geokit/mappable.rb', line 451

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