class Gruff::SideStackedBar

New gruff graph type added to enable sideways stacking bar charts (basically looks like a x/y flip of a standard stacking bar chart)

Here’s how to set up a Gruff::SideStackedBar.

g = Gruff::SideStackedBar.new
g.title = 'SideStackedBar Graph'
g.labels = {
  0 => '5/6',
  1 => '5/15',
  2 => '5/24',
  3 => '5/30',
}
g.data :Art, [0, 5, 8, 15]
g.data :Philosophy, [10, 3, 2, 8]
g.data :Science, [2, 15, 8, 11]
g.write('side_stacked_bar.png')