Geocoders

Code for accessing various geocoding web services with an ultra simple API:

name, (lat, lon) = geocode('london')

The geocode functions return (unicode_place_name, (float_lat, float_lon)) if the string can be geocoded, and (None, (None, None)) if it cannot.

Currently supported: Google Geocoder, Yahoo! Geocoder, Yahoo! Placemaker, GeoNames, Multimap, and Nominatim.

Google:

from geocoders.google import geocoder geocode = geocoder('GOOGLE-API-KEY') geocode('new york') (u'New York, NY, USA', (40.756053999999999, -73.986951000000005)) geocode('oneuth') (u'South, Bloomfield, NY 14469, USA', (-77.5385449999999, 42.865267000000003))

Yahoo!:

from geocoders.yahoo import geocoder geocode = geocoder('YAHOO-API-KEY') geocode('new york') (u'New York, NY, US', (40.714550000000003, -74.007124000000005)) geocode('oneuth') (u'Aneth, UT 84510, US', (37.217799999999997, -109.189911))

Yahoo! Placemaker:

from geocoders.placemaker import geocoder geocode = geocoder('YAHOO-API-KEY') geocode('new york') (u'New York, NY, US', (40.714500000000001, -74.007099999999994)) geocode('oneuth') (None, (None, None))

While Yahoo! Placemaker isn't strictly designed as a geocoder, in practice it can be useful for things like "did you mean location X" in a regular search engine.

GeoNames:

from geocoders.geonames import geocode # No need for a geocoder factory geocode('new york') (u'New York', (40.714269100000003, -74.005972900000003)) geocode('oneuth') (None, (None, None))

Multimap:

from geocoders.multimap import geocoder geocode = geocoder('MULTIMAP-API-KEY') geocode('new york') ('New York, State of New York, United States', ('43.00035', '-75.49990')) geocode('oneuth') ('Omeath, Louth', ('54.08790', '-6.26070'))

Nominatim:

from geocoders.nominatim import geocoder geocode = geocoder('EMAIL-ADDRESS') geocode('new york') ('New York, United States of America, North America', ('40.7305991', '-73.9865812')) geocode('oneuth') (None, (None, None))

Reversing the order

Some libraries use (longitude, latitude) co-ordinate pairs instead of the (latitude, longitude) returned by the geocode functions. The geocoder factory functions all take an optional lonlat=True argument if you need this behaviour. Some examples:

Google:

from geocoders.google import geocoder geocode = geocoder('GOOGLE-API-KEY', lonlat = True) geocode('new york') (u'New York, NY, USA', (-74.005972900000003, 40.714269100000003))

GeoNames:

from geocoders.geonames import geocoder # Using geocoder factory geocode = geocoder(lonlat = True) geocode('new york') (u'New York', (-74.005972900000003, 40.714269100000003))