RGeo::Shapefile is an optional module for RGeo for reading geospatial data from ESRI shapefiles.
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::Shapefile is an optional RGeo add-on module for reading geospatial data from ESRI shapefiles. The shapefile format is a common file format for geospatial data sets. It is specified in this ESRI whitepaper.
Example:
require 'rgeo/shapefile' RGeo::Shapefile::Reader.open('myshpfil.shp') do |file| puts "File contains #{file.num_records} records." file.each do |record| puts "Record number #{record.index}:" puts " Geometry: #{record.geometry.as_text}" puts " Attributes: #{record.attributes.inspect}" end file.rewind record = file.next puts "First record geometry was: #{record.geometry.as_text}" end
RGeo::Shapefile has the following requirements:
Ruby 1.8.7 or later. Ruby 1.9.2 or later preferred.
rgeo 0.3.3 or later.
dbf 1.7 or later.
Install RGeo::Shapefile as a gem:
gem install rgeo gem install rgeo-shapefile
See the README for the “rgeo” gem, a required dependency, for further installation information.
Improve test case coverage.
Support for writing shapefiles.
Documentation is available at virtuoso.rubyforge.org/rgeo-shapefile/README_rdoc.html
Source code is hosted on Github at github.com/dazuma/rgeo-shapefile
Contributions are welcome. Fork the project on Github.
Report bugs on Github issues at github.org/dazuma/rgeo-shapefile/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).
Although we don’t use shapelib (shapelib.maptools.org) to read ESRI shapefiles, we did borrow a bunch of their test cases.
Copyright 2010-2012 Daniel Azuma
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