getLeftYRightYscaled (Gruff::BarConversion)

    # 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