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# Gruff Graphs
[](https://travis-ci.org/topfunky/gruff)
[](http://badge.fury.io/rb/gruff)
A library for making beautiful graphs.
## Installation
Add this line to your application's Gemfile:
gem 'gruff'
And then execute:
$ bundle
Or install it yourself as:
$ gem install gruff
## Usage
```Ruby
require 'gruff'
g = Gruff::Line.new
g.title = 'Wow! Look at this!'
g.labels = { 0 => '5/6', 1 => '5/15', 2 => '5/24', 3 => '5/30', 4 => '6/4',
5 => '6/12', 6 => '6/21', 7 => '6/28' }
g.data :Jimmy, [25, 36, 86, 39, 25, 31, 79, 88]
g.data :Charles, [80, 54, 67, 54, 68, 70, 90, 95]
g.data :Julie, [22, 29, 35, 38, 36, 40, 46, 57]
g.data :Jane, [95, 95, 95, 90, 85, 80, 88, 100]
g.data :Philip, [90, 34, 23, 12, 78, 89, 98, 88]
g.data :Arthur, [5, 10, 13, 11, 6, 16, 22, 32]
g.write('exciting.png')
```
## Examples
You can find many examples in the [test](https://github.com/topfunky/gruff/tree/master/test)
directory along with their resulting charts in the
[output](https://github.com/topfunky/gruff/tree/master/test/output) directory.
You can find older examples here: http://nubyonrails.com/pages/gruff
### Accumulator bar chart
### Area chart
### Bar chart
### Bezier chart
In progress!
### Bullet chart
In progress!
### Dot chart
### Line chart
### LineXY chart
### Net chart
### Pie chart
### Scatter chart
### Side bar chart
### Side stacked bar chart
### Spider chart
### Stacked area chart
### Stacked bar chart
## Documentation
http://www.rubydoc.info/github/topfunky/gruff/frames
## Contributing
### Source
The source for this project is now kept at GitHub:
http://github.com/topfunky/gruff
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
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