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.
# File lib/gruff/accumulator_bar.rb, line 9 def draw raise(Gruff::IncorrectNumberOfDatasetsException) unless @data.length == 1 accum_array = @data.first[DATA_VALUES_INDEX][0..-2].inject([0]) { |a, v| a << a.last + v} data 'Accumulator', accum_array set_colors @data.reverse! super end
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