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RGeo::GeoJSON is an optional module for RGeo that provides GeoJSON encoding and decoding services.


RGeo is a key component for writing location-aware applications in the Ruby programming language. At its core is an implementation of the industry standard OGC Simple Features Specification, which provides data representations of geometric objects such as points, lines, and polygons, along with a set of geometric analysis operations. See the README for the "rgeo" gem for more information.

RGeo::GeoJSON is an optional RGeo add-on module that provides GeoJSON encoding and decoding services. GeoJSON is an emerging standard format used by many web services that need to communicate geospatial data. See http://www.geojson.org for more information.


require 'rgeo/geo_json'

str1 = '{"type":"Point","coordinates":[1,2]}'
geom = RGeo::GeoJSON.decode(str1, :json_parser => :json)
geom.as_text              # => "POINT(1.0 2.0)"

str2 = '{"type":"Feature","geometry":{"type":"Point","coordinates":[2.5,4.0]},"properties":{"color":"red"}}'
feature = RGeo::GeoJSON.decode(str2, :json_parser => :json)
feature['color']          # => 'red'
feature.geometry.as_text  # => "POINT(2.5 4.0)"

hash = RGeo::GeoJSON.encode(feature)
hash.to_json == str2      # => true


RGeo::GeoJSON has the following requirements:

  • Ruby 1.9.3 or later
  • rgeo 0.3.13 or later.

Include in your bundle:

gem 'rgeo-geojson'

Install RGeo::GeoJSON as a gem:

gem install rgeo-geojson

See the README for the "rgeo" gem, a required dependency, for further installation information.

If you are using Ruby 1.8, use version 0.2.x.

To-do list

  • Add support for the "bbox" and "crs" elements.

Development and support

RDoc Documentation is available at http://rdoc.info/gems/rgeo-geojson

Source code is hosted on Github at http://github.com/rgeo/rgeo-geojson

Contributions are welcome. Fork the project on Github.

Report bugs on Github issues at http://github.com/rgeo/rgeo-geojson/issues


RGeo is written by Daniel Azuma (http://www.daniel-azuma.com).

Development is supported by:


Copyright 2014 Daniel Azuma

Copyright 2014 Tee Parham