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Make Graphs for Ruby With Gruff Graph Library
The Gruff Graph Library is a project to make beautiful graphs with Ruby. This library allow us to graph negative numbers (line and bar), specify colors, and customize the graphs in other ways.
This graph library can be used alone or with Ruby on Rails.
Few graph types that can be created using Gruff graphing library:
- Line Graph
- Wide Graph
- Pie Graph
- Spider Graph
- Side Stacked Graph
- Bar Graph with Image
Website: http://nubyonrails.com/pages/gruff
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