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 www.geojson.com for more information.
Example:
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 1.8.7 or later. Ruby 1.9.2 or later preferred.
rgeo 0.3.3 or later.
If you are using Ruby 1.8, you should install the “json” gem to support parsing JSON strings. Ruby 1.9 has JSON support in its standard library and does not require the gem.
Install RGeo::GeoJSON as a gem:
gem install rgeo gem install rgeo-geojson
See the README for the “rgeo” gem, a required dependency, for further installation information.
Add support for the “bbox” and “crs” elements.
Documentation is available at virtuoso.rubyforge.org/rgeo-geojson/README_rdoc.html
Source code is hosted on Github at github.com/dazuma/rgeo-geojson
Contributions are welcome. Fork the project on Github.
Report bugs on Github issues at github.org/dazuma/rgeo-geojson/issues
Contact the author at dazuma at gmail dot com.
RGeo is written by Daniel Azuma (www.daniel-azuma.com).
Development of RGeo is sponsored by GeoPage, Inc. (www.geopage.com).
Copyright 2010-2012 Daniel Azuma
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