# File temp/Graph/Line.rb, line 154
      def get_y_labels
        maxvalue = max_value
        minvalue = min_value
        range = maxvalue - minvalue
        top_pad = range == 0 ? 10 : range / 20.0
        scale_range = (maxvalue + top_pad) - minvalue

        scale_division = scale_divisions || (scale_range / 10.0)

        if scale_integers
          scale_division = scale_division < 1 ? 1 : scale_division.round
        end

        rv = []
        maxvalue = maxvalue%scale_division == 0 ? 
          maxvalue : maxvalue + scale_division
        minvalue.step( maxvalue, scale_division ) {|v| rv << v}
        return rv
      end