# 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