ffi-gdal

Ruby wrapper around GDAL, using FFI, along with some helper methods.

Installation

Add this line to your application's Gemfile:

gem 'ffi-gdal'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ffi-gdal

Usage

ffi-gdal provides two interfaces, really: the direct FFI wrapper around GDAL's C API, and a Ruby-fied interface that uses the FFI wrapper to make use more like using an object-oriented library instead of a functional one. Most likely you'll just want to use the Ruby-fied library, but if for some reason that doesn't get you what you want, direct access to the FFI wrapper (which is really just direct access to the C API) is available.

The Ruby-fied Library

To distinguish this gem from the already-existing gdal gem, you require ffi-gdal to get access to the GDAL module and its children.

The direct FFI wrapper

Following RubyGem conventions, to get access to the FFI wrapper, you require ffi/gdal.

Testing

You'll need some images to run the integration specs against, and instead of keeping those as part of this repo, there's a Rake task that will pull OSGeo's set of sample geotiffs down via FTP. Running rake get_tifs will pull everything down from ftp://downloads.osgeo.org/geotiff/samples and put the files under spec/support/images/osgeo/geotiff.

Contributing

1. Fork it ( https://github.com/turboladen/ffi-gdal/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request