A little more advanced bar chart with Gruff.rb

#!/usr/bin/ruby

require 'rubygems'
require 'gruff'

# With more options now
g = Gruff::Bar.new('800x500') # Define a custom size

g.sort = false  # Do NOT sort data based on values
g.maximum_value = 50  # Declare a max value for the Y axis
g.minimum_value = 0   # Declare a min value for the Y axis

g.theme_37signals  # Declare a theme from the presets available

g.title = 'A more advanced bar chart'

g.data('Foo', [5, 10, 24])
g.data('Bar', [15, 3, 10])
g.data('Else', [38, 15, 32])

g.labels = {0 => 'Last year', 1 => 'This year', 2 => 'Next year'} # Define labels for each of the "columns" in data

g.write('a_more_advanced_graph.png')