javascript - Highcharts 的历史数据中不存在毫秒数据

Question

问题是，当 highcharts 的历史数据中有大量数据时，放大数据仅每秒出现，而不是毫秒。因此，在放大历史数据中包含大量数据的图表时，毫秒数据会丢失。

要重现该问题，请访问下面的链接，然后当历史数据中存在大量数据时，将 setinterval 方法中的间隔从 20 更改为某个大数字 20000，然后使用范围选择器放大历史数据，历史数据只有绘制了秒数据，但未绘制毫秒数据。

该问题在以下链接中重现: https://jsfiddle.net/nh5ap21m/

访问了highcharts的api文档:https://api.highcharts.com/highcharts/plotOptions.series.pointInterval并尝试对pointInterval、pointIntervalUnit、connectNulls、gapSize、gapUnit进行更改，但仍然找不到确切的解决方案。

此处更改间隔:

setInterval(function () {
                    var x = (new Date()).getTime(), // current time
                        y = Math.round(Math.random() * 100);
                    series1.addPoint([x, y], true, true);
                }, 20);
                var series2 = this.series[1];
                setInterval(function () {
                    var x = (new Date()).getTime(), // current time
                        y = Math.round(Math.random() * 50);
                    series2.addPoint([x, y], true, true);
                }, 20);

预期结果:预期结果是当放大图表的历史数据时，还应该绘制毫秒数据。

// Create the chart
Highcharts.stockChart('container', {
    chart: {
        events: {
            load: function () {

                // set up the updating of the chart each second
                var series1 = this.series[0];
                setInterval(function () {
                    var x = (new Date()).getTime(), // current time
                        y = Math.round(Math.random() * 100);
                    series1.addPoint([x, y], true, true);
                }, 20);
                var series2 = this.series[1];
                setInterval(function () {
                    var x = (new Date()).getTime(), // current time
                        y = Math.round(Math.random() * 50);
                    series2.addPoint([x, y], true, true);
                }, 20);
            }
        }
    },

    time: {
        useUTC: false
    },

    rangeSelector: {
        buttons: [{
            count: 1,
            type: 'minute',
            text: '1M'
        }, {
            count: 5,
            type: 'minute',
            text: '5M'
        }, {
            type: 'all',
            text: 'All'
        }],
        inputEnabled: false,
        selected: 0
    },

    title: {
        text: 'Live random data'
    },

    exporting: {
        enabled: false
    },
legend: {
                enabled: true
            },
plotOptions: {
        series: {
            marker: {
                states: {
                    hover: {
                        enabled: true,
                        animation: {duration: 100},
                        enableMouseTracking: true,
                        stickyTracking: true
                    }
                }
            }
        }
    },

tooltip:{
								shared: true,
                split: false,
  							stickyTracking: true,
                enableMouseTracking: true,
                enabled: true,
                followPointer: true,
                followTouchMove: true,
						    formatter: function(){
                var tooltip = "";
                var phaseNameList = "";
                
                //tooltip += "<b>I-unit "+ "<br/>"+ "x: "+this.x +"</b>";
                tooltip += "<b>I-unit "+ "<br/>"+ "x: "+ new Date(this.x)+
                "</b>";
                tooltip +=  "<br/>"+ "y: "+this.y +"</b>";
                tooltip +=  "<br/>"+ this + "</b>";
                return tooltip;
               }
},

    series: [{
        name: 'Random data1',
        data: (function () {
            // generate an array of random data
            var data = [],
                time = (new Date()).getTime(),
                i;

            for (i = -999; i <= 0; i += 1) {
                data.push([
                    time + i * 1000,
                    Math.round(Math.random() * 100)
                ]);
            }
            return data;
        }())
    },
    {
    name: 'Random data2',
        data: (function () {
            // generate an array of random data
            var data = [],
                time = (new Date()).getTime(),
                i;

            for (i = -999; i <= 0; i += 1) {
                data.push([
                    time + i * 1000,
                    Math.round(Math.random() * 50)
                ]);
            }
            return data;
        }())
    }]
});

<script src="https://code.highcharts.com/stock/highstock.js"></script>
<script src="https://code.highcharts.com/stock/modules/exporting.js"></script>
<script src="https://code.highcharts.com/stock/modules/export-data.js"></script>

<div id="container" style="height: 400px; min-width: 310px"></div>

Answer 1

不同之处在于您的初始数据具有一秒的间隔:

for (i = -999; i <= 0; i += 1) {
    data.push([
        time + i * 1000,    // date every second
        Math.round(Math.random() * 100)
    ]);
}

动态添加的数据间隔为20毫秒:

setInterval(function() {
    var x = (new Date()).getTime(), // date every 20 milliseconds
        y = Math.round(Math.random() * 50);
    series2.addPoint([x, y], true, true);
}, 20);