饼图上的Highcharts setData无法正常工作

Question

我正在使用Highchart库显示饼图。 我要显示两组数据，并且每隔5秒无限期地在两组数据之间切换。 当我加载初始数据集时，图表将按原样显示。 当我加载第二组数据（使用setData ）时，图表会发生变化。 但是，随后对setData所有调用似乎都无济于事。 我希望图表会一次又一次地更改以对应于新数据。 但是什么也没有发生，并且控制台中没有记录任何错误。 我可能做错了什么？

这是我的代码：

var chart24HoursTop5;
var lastSet = 1;
var set1 = [{
    "seconds": 754,
    "y": 754,
    "downtime": "00:05:07",
    "siteNumber": "13",
    "siteName": "Preston",
    "name": "Preston",
    "motorolaNumber": "SZ092C113",
    "system": "SZ Quantar",
    "channels": "5",
    "towerOwner": "Wynn Communications",
    "shelterOwner": "Wynn Communications",
    "equipmentOwner": "DPS",
    "latitude": "35.724833",
    "longitude": "-95.988333",
    "color": "#348AA7"
}, {
    "seconds": 20,
    "y": 20,
    "downtime": "00:00:20",
    "siteNumber": "29",
    "siteName": "Bakers Peak",
    "name": "Bakers Peak",
    "motorolaNumber": "SZ092C129",
    "system": "SZ Quantar",
    "channels": "5",
    "towerOwner": "FBI",
    "shelterOwner": "DPS",
    "equipmentOwner": "DPS",
    "latitude": "34.839722",
    "longitude": "-98.803333",
    "color": "#ffa600"
}, {
    "seconds": 19,
    "y": 19,
    "downtime": "00:00:19",
    "siteNumber": "30",
    "siteName": "Walters",
    "name": "Walters",
    "motorolaNumber": "SZ092C130",
    "system": "SZ Quantar",
    "channels": "5",
    "towerOwner": "Cotton Electric",
    "shelterOwner": "DPS",
    "equipmentOwner": "DPS",
    "latitude": "34.358583",
    "longitude": "-98.321583",
    "color": "#cb5464"
}, {
    "seconds": 12,
    "y": 12,
    "downtime": "00:00:12",
    "siteNumber": "69",
    "siteName": "Hominy",
    "name": "Hominy",
    "motorolaNumber": "SZ092C169",
    "system": "P25 GTR",
    "channels": "",
    "towerOwner": "Grand River Dam Authority",
    "shelterOwner": "Grand River Dam Authority",
    "equipmentOwner": "GRDA",
    "latitude": "36.4",
    "longitude": "-96.4863888888889",
    "color": "#82F2C0"
}];
var set2 = [{
    "seconds": 691,
    "y": 691,
    "downtime": "691 Sec",
    "siteNumber": "13",
    "siteName": "Preston 2",
    "name": "Preston 2",
    "motorolaNumber": "SZ092C113",
    "system": "SZ Quantar",
    "channels": "5",
    "towerOwner": "Wynn Communications",
    "shelterOwner": "Wynn Communications",
    "equipmentOwner": "DPS",
    "latitude": "35.724833",
    "longitude": "-95.988333",
    "color": "#348AA7"
}, {
    "seconds": 10,
    "y": 10,
    "downtime": "10 Sec",
    "siteNumber": "29",
    "siteName": "Bakers Peak 2",
    "name": "Bakers Peak 2",
    "motorolaNumber": "SZ092C129",
    "system": "SZ Quantar",
    "channels": "5",
    "towerOwner": "FBI",
    "shelterOwner": "DPS",
    "equipmentOwner": "DPS",
    "latitude": "34.839722",
    "longitude": "-98.803333",
    "color": "#ffa600"
}, {
    "seconds": 1,
    "y": 1,
    "downtime": "1 Sec",
    "siteNumber": "30",
    "siteName": "Walters 2",
    "name": "Walters 2",
    "motorolaNumber": "SZ092C130",
    "system": "SZ Quantar",
    "channels": "5",
    "towerOwner": "Cotton Electric",
    "shelterOwner": "DPS",
    "equipmentOwner": "DPS",
    "latitude": "34.358583",
    "longitude": "-98.321583",
    "color": "#cb5464"
}, {
    "seconds": 5,
    "y": 5,
    "downtime": "5 Sec",
    "siteNumber": "69",
    "siteName": "Hominy 2",
    "name": "Hominy 2",
    "motorolaNumber": "SZ092C169",
    "system": "P25 GTR",
    "channels": "",
    "towerOwner": "Grand River Dam Authority",
    "shelterOwner": "Grand River Dam Authority",
    "equipmentOwner": "GRDA",
    "latitude": "36.4",
    "longitude": "-96.4863888888889",
    "color": "#82F2C0"
}];

$(document).ready(function () {
    var optionsFor24HoursTop5 = {
        chart: {
            plotBackgroundColor: null,
            plotBorderWidth: null,
            plotShadow: false,
            type: 'pie'
        },
        credits: {
            enabled: false
        },
        title: {
            text: 'Last 24 Hours'
        },
        tooltip: {
            pointFormat: '{series.name}: {point.downtime}'
        },
        plotOptions: {
            pie: {
                allowPointSelect: true,
                cursor: 'pointer',
                dataLabels: {
                    enabled: true,
                    format: '{point.name}: {point.downtime}'
                }
            }
        },
        series: [{
            name: 'DropSum',
            colorByPoint: true,
            data: set1
        }]
    };
    chart24HoursTop5 = Highcharts.chart("chartContainer", optionsFor24HoursTop5);
    setTimeout(changeData, 5000);
});

function changeData() {
    if (lastSet == 1) {
        chart24HoursTop5.series[0].setData(set2);
        lastSet = 2;
    } else {
        chart24HoursTop5.series[0].setData(set1);
        lastSet = 1;
    }

这是一个完全正常工作的jsFiddle示例：

https://jsfiddle.net/mspinks/ksd8gjec/23/

您会在示例中注意到图表最初显示，然后5秒钟后，数据发生变化并反映在图表显示中。 但是，数据每5秒再次更改一次，并且这些更改都不会反映在图表显示中。 Highcharts为什么在第一次更改后不显示更新的数据？

Answer 1

这的确似乎是某种bug（？），但一种变通方法似乎是指定在设置数据时不应更新点。 例如（ JSFiddle ）：

function changeData() {
  if (lastSet == 1){
    // The fourth parameter makes or breaks the update
    chart24HoursTop5.series[0].setData(set2, true, true, false);
    lastSet = 2;
  } else {
    // The fourth parameter makes or breaks the update
    chart24HoursTop5.series[0].setData(set1, true, true, false);
    lastSet = 1;
  }
  setTimeout(changeData, 5000);
}

这确实意味着没有动画，因为这些点被废弃并且创建了新点。 但是，似乎确实是这些点的更新似乎完全阻止了更新的发生，因此希望也可以解决主要问题。

Answer 2

为了提高性能，Highcharts会更改原始数据数组，这会导致变量set1和set2在第一次更新后相同。

解决方案可以是通过函数返回数据：

function set1() {
    return [...];
}

function set2() {
    return [...];
}

function changeData() {
    if (lastSet == 1) {
        chart24HoursTop5.series[0].setData(set2());
        lastSet = 2;
    } else {
        chart24HoursTop5.series[0].setData(set1());
        lastSet = 1;
    }
    setTimeout(changeData, 2000);
}

现场演示： https : //jsfiddle.net/BlackLabel/0smxjLac/