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Matplotlib

This library enables to directly call matplotlib from Ruby language. This is built on top of pycall.

Installation

Add this line to your application's Gemfile:

gem 'matplotlib'

And then execute:

$ bundle

Or install it yourself as:

$ gem install --pre matplotlib

Usage

Using pyplot in irb console or standalone scripts

Example usage:

require 'matplotlib/pyplot'
plt = Matplotlib::Pyplot

xs = [*1..100].map {|x| (x - 50) * Math::PI / 100.0 }
ys = xs.map {|x| Math.sin(x) }

plt.plot(xs, ys)
plt.show()

IRuby integration

matplotlib/iruby provides integration between IRuby notebook and matplotlib. This functionality can be enabled by calling Matplotlib::IRuby.activate.

require 'matplotlib/iruby'
Matplotlib::IRuby.activate

matplotlib/iruby also loads matplotlib/pyplot, so you can use Matplotlib::Pyplot module without explicitly requiring matplotlib/pyplot. And this introduces a post execution hook which put figures that are created in a cell just below the execution result of the cell.

See ipynb files in examples to see example usages.

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/mrkn/matplotlib.

License

The gem is available as open source under the terms of the MIT License.

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matplotlib wrapper for Ruby

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