Heatmap generation for Ruby


heatmap Build Status

Simple Heatmap generator for Ruby.


This gem requires ImageMagick to run. You can easily install it with homebrew:

brew update && brew install ImageMagick


Add this line to your Gemfile:

gem 'heatmap'

And then execute:

bundle install

Or install it yourself:

gem install heatmap


Using heatmap is as easy as 1,2,3:

1) Create a new Map object:

map = Heatmap.new #same as Heatmap::Map.new

2) Add Area objects to the map:

map << Heatmap::Area.new(x, y, alpha)

3) Output the generated heatmap:



Examples are included in the examples directory.

Contributing to heatmap

  • Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet.
  • Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it.
  • Fork the project.
  • Start a feature/bugfix branch.
  • Commit and push until you are happy with your contribution.
  • Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
  • Please try not to mess with the Rakefile, version, or history.



Copyright (c) 2013 Thiago Jackiw. See LICENSE.txt for further details.