class Gruff::AccumulatorBar
Gruff::AccumulatorBar
is a special bar graph that shows a single dataset as a set of stacked bars. The bottom bar shows the running total and the top bar shows the new value being added to the array.
Here’s how to set up a Gruff::AccumulatorBar
.
g = Gruff::AccumulatorBar.new g.title = 'Your Savings' g.data 'First', [1, 1, 1] g.write('accumulator_bar.png')
Private Instance Methods
Source
# File lib/gruff/accumulator_bar.rb, line 21 def setup_data raise(Gruff::IncorrectNumberOfDatasetsException) unless store.length == 1 accum_array = store.data.first.points[0..-2].reduce([0]) { |a, v| a << (a.last + v.to_f) } # steep:ignore data 'Accumulator', accum_array set_colors store.reverse! super end
Calls superclass method
Gruff::StackedBar#setup_data