Generate "bumpspark"-style sparklines from Ruby & Rails. Bumpsparks are sparklines which show discrete data points and highlight extremes.
Note: This library is based on _why's `bumpspark' code, originally discussed and collaborated on at RedHanded.
It has been refactored and built out as a gem suitable for inclusion in Rails projects (and standalone Ruby code).
Thanks to the original collaborators:
- _why (concept, BMP implementation)
- jzp (png)
- MenTaLguY (transparency)
gem install bumpspark
bumpspark as a dependency:
bumpspark_tag from your views or helpers, passing it the data
points you'd like graphed.
<%= bumpspark_tag [12, 34, 12, 42, 12, 23] %>
Simply create a
Bumpspark::Graph instance and call
to_png on it.
require 'bumpspark' graph = Bumpspark::Graph.new [12, 34, 12, 42, 12, 23] File.open('bumpspark.png', 'wb') do |file| file.write graph.to_png end
From the commandline
Generate a bumpspark directly from the commandline.
% cat temperature.txt 23 25 33 22 25 33 22 % cat temperature.txt | bumpspark > temperature.png
Note on Patches/Pull Requests
Please check the TODO file for information on things that need doing.
- Fork the project.
- Make your feature addition or bug fix.
- Add tests for it. This is important so I don't break it in a future version unintentionally.
- Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
- Send me a pull request. Bonus points for topic branches.
Copyright (c) 2009-2012 Bruce Williams, et al. See LICENSE for details.