Skills Matter : London Ruby User Group:Using Geokit in Socia

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London Ruby User Group:Using Geokit in Social Apps

Using Geokit in Social Apps
Geokit is a RubyGem and Rails plugin with a wrapper interface to various geocoding providers and supports geocoding addresses, latitude/longitude coordinates and IP addresses. Amongst several other things, Geokit also calculates distances between two points and the mid-point between them.
It consists of the mappable, inflector and geocoders modules. The steps for geocoding an address consists of installing the gem, opening an irb session, requiring the gem and geokit and entering an address to geocode.

The latitude and longitude data is returned along with the city. This data is put into Google's geocoder and reverse geocoding is done for the lat/lng point. One can also geocode an IP address. The Rails plugin can automatically geocode new ActiveRecord records upon creation, or an IP address in the controller and store the result in the session.
The gem allows distance calculation between two points in miles, kilometers and even nautical miles, as well as enabling heading calculation between two points in degrees. The Rails plugin does have certain limitations, such as its incompatibility with SQLite and below V 8.1 of PostgreSQL. However, it is supported on Ruby 1.9. Alternatives to Geokit include Graticule, YM4R and the defunct Geocoder.

ABOUT PAUL JENSEN

Developer at New Bamboo, hobbying comedy writer and designer
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