# File temp/Graph/Bar.rb, line 160
      def draw_data
        fieldwidth = field_width
        fieldheight = field_height
        bargap = bar_gap ? (fieldwidth < 10 ? fieldwidth / 2 : 10) : 0

        subbar_width = fieldwidth - bargap
        subbar_width /= @data.length if stack == :side
        x_mod = (@graph_width-bargap)/2 - (stack==:side ? subbar_width/2 : 0)
        # Y1
        p2 = @graph_height
        # to X2
        field_count = 0
        @config[:fields].each_index { |i|
          dataset_count = 0
          for dataset in @data
            # X1
            p1 = (fieldwidth * field_count)
            # to Y2
            p3 = @graph_height - (dataset[:data][i] * fieldheight)
            p1 += subbar_width * dataset_count if stack == :side
            @graph.add_element( "path", {
              "class" => "fill#{dataset_count+1}",
              "d" => "M#{p1} #{p2} V#{p3} h#{subbar_width} V#{p2} Z"
            })
            make_datapoint_text(
              p1 + subbar_width/2.0,
              p3 - 6,
              dataset[:data][i].to_s)
            dataset_count += 1
          end
          field_count += 1
        }
      end