addMarkPoint 和 delMarkPoint

//周期調用刷新數(shù)據(jù)
    setInterval(function () {
        console.log("go");
        //在線，添加點
        myChart.addMarkPoint(2, {
            data: [{ name: "北京" }]
        });

        //離線，添加地點
        myChart.addMarkPoint(1, {
            data: [{ name: "天津" }]
        });

        //刪除地點
        myChart.delMarkPoint(2, "北京");

        myChart.refresh();//實時更新到地圖
    }, 5000);