= Plotrb

Vega/D3-based plotting gem for Ruby

• {sciruby.com}[http://sciruby.com]
• {Google+}[https://plus.google.com/109304769076178160953/posts]
• {Wan Zuhao}[http://www.wanzuhao.com]
• {Examples on bl.ocks.org}[http://bl.ocks.org/zuhao]

{}[https://travis-ci.org/zuhao/plotrb]

== Description

Plotrb is an experimental plotting library for the Ruby language. It brings {the simplicity of Vega}[http://trifacta.github.io/vega/] and {the power of D3}[http://d3js.org/] to the Ruby science community, to allow for {fast, customizable design; reusability and shareability; programmatic generation of visualizations; and improved performance and platform flexibility}[https://github.com/trifacta/vega/wiki/Vega-and-D3].

Plotrb is in many ways the child of {Rubyvis}[http://github.com/SciRuby/rubyvis] (the Ruby port of Protovis). However, it improves upon Rubyvis in that it uses a DSL that will be much more familiar and natural to Ruby coders.

Plotrb was created by Wan Zuhao as part of Google's Summer of Code 2013. It is part of {SciRuby}[http://sciruby.com].

== Installation

Add this line to your application's Gemfile:

gem 'plotrb'

And then execute:

bundle

Or install it yourself as:

gem install plotrb

== Usage

Currently, Plotrb is intended to generate JSON specification for Vega. If you would like to see the visualization rendered in PNG or SVG, you will have to install {Vega}[https://github.com/trifacta/vega] and use its {Headless Mode}[https://github.com/trifacta/vega/wiki/Headless-Mode].

Note that Plotrb is a work in progress, so we can't guarantee that every example will work exactly.

• {Arc}[http://bl.ocks.org/zuhao/6663966]
• {Area}[http://bl.ocks.org/zuhao/6663999]
• {Bar}[http://bl.ocks.org/zuhao/6662333]
• {Barley}[http://bl.ocks.org/zuhao/6664828]
• {Lifelines}[http://bl.ocks.org/zuhao/6664107]

Examples may also be found in the examples/ directory.

== Contributing

1. Fork it
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 new Pull Request

== License

Copyright (c) 2013, Wan Zuhao and the Ruby Science Foundation.

All rights reserved.

Plotrb, along with SciRuby, is licensed under the BSD 2-clause license. See {LICENSE.txt}[https://github.com/SciRuby/sciruby/wiki/License] for details.

== Donations

Support a SciRuby Fellow:

{}[http://www.pledgie.com/campaigns/15783]