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 10 def draw raise(Gruff::IncorrectNumberOfDatasetsException) unless @data.length == 1 accumulator_array = [] index = 0 increment_array = @data.first[DATA_VALUES_INDEX].inject([]) {|memo, value| memo << ((index > 0) ? (value + memo.max) : value) accumulator_array << memo[index] - value index += 1 memo } data "Accumulator", accumulator_array super end
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