class Gruff::StackedArea

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

g = Gruff::StackedArea.new
g.title = 'StackedArea Graph'
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.write('stacked_area.png')