# File lib/gruff/bar_conversion.rb, line 20
        def getLeftYRightYscaled( data_point, result )
                case @mode
                when 1 then # Case one
                        # minimum value >= 0 ( only positiv values )
      result[0] = @graph_top + @graph_height*(1 - data_point) + 1
                result[1] = @graph_top + @graph_height - 1
                when 2 then  # Case two
                        # only negativ values
                result[0] = @graph_top + 1
                result[1] = @graph_top + @graph_height*(1 - data_point) - 1
                when 3 then # Case three
                        # positiv and negativ values
        val = data_point-@minimum_value/@spread
        if ( data_point >= @zero ) then
                result[0] = @graph_top + @graph_height*(1 - (val-@zero)) + 1
               result[1] = @graph_top + @graph_height*(1 - @zero) - 1
        else
                                result[0] = @graph_top + @graph_height*(1 - (val-@zero)) + 1
               result[1] = @graph_top + @graph_height*(1 - @zero) - 1
        end
                else
                        result[0] = 0.0
                        result[1] = 0.0
                end                           
        end