绘制多系列酒窝图折线图时，测量轴合计值。如何避免

我正在使用dimple.js库绘制多系列折线图。我面临的问题是，将x轴重复值相加并绘制为图形中的单个点。这是我的示例http://jsfiddle.net/geervani/jcow2y4u/8/。在下面的数据中，对于KM 240000，有两个MM值-8和14。应将其绘制为2个不同的点。但是渲染的图表在（22,240000）处只有1点。点8和14相加。这怎么解决。请提出建议。

 var chartdata = [{
        "Tyre": "1-OL",
            "Design": "HDL2+ECO+",
            "Size": "295.0/22.5R55.0",
            "KM": 128000,
            "MM": 22
    }, {
        "Tyre": "1-OL",
            "Design": "HDL2+ECO+",
            "Size": "295.0/22.5R55.0",
            "KM": 145000,
            "MM": 20
    }, {
        "Tyre": "1-OL",
            "Design": "HDL2+ECO+",
            "Size": "295.0/22.5R55.0",
            "KM": 195000,
            "MM": 17
    }, {
        "Tyre": "1-OL",
            "Design": "HDL2+ECO+",
            "Size": "295.0/22.5R55.0",
            "KM": 240000,
            "MM": 8
    }, {
        "Tyre": "1-OL",
            "Design": "HDL2+ECO+",
            "Size": "295.0/22.5R55.0",
            "KM": 240000,
            "MM": 14
    }, {
        "Tyre": "1-OL",
            "Design": "HDL2+ECO+",
            "Size": "295.0/22.5R55.0",
            "KM": 300000,
            "MM": 12
    }, {
        "Tyre": "1-OL",
            "Design": "HDL2+ECO+",
            "Size": "295.0/22.5R55.0",
            "KM": 429117.39,
            "MM": 3
    }];

    var svg = dimple.newSvg("#chartContainer", '100%', '100%');

    // Create and Position a Chart
    var myChart = new dimple.chart(svg, chartdata);
    myChart.setMargins(50, 10, 10, 50);
    //myChart.setBounds(30, '0px', '95%', '100%');

    var x = myChart.addCategoryAxis("x", "KM");
    x.showGridlines = false;
    var y = myChart.addMeasureAxis("y", "MM");
    y.showGridlines = false;
    y.ticks = 5;

    // Min price will be green, middle price yellow and max red
    //myChart.addColorAxis("KM", ["green", "yellow", "red"]);

    // Add a thick line with markers
    myChart.addSeries("Tyre", dimple.plot.bubble);

    var s = myChart.addSeries("Tyre", dimple.plot.line);

    // Add line markers to the line because it looks nice
    s.lineMarkers = true;
    // Draw the chart
    myChart.draw();

谢谢，杰尔瓦尼