Highcharts 双轴车速表

下图是一个 Highcharts 双轴车速表

配置

配置属性 chart.type 为 'gauge' 即可将图表显示为 双轴车速表
```
 var chart = {
    type: 'guage'
 };
```
配置属性 pane

属性 pane 只适用在极坐标图和角度测量仪

pane 属性可配置对象持有组合 x 轴和 y 周的常规选项

每个 x 轴和 y 轴都可以通过索引关联到窗格中

pane.startAngle 是 x 轴或测量轴的开始度数，以度数的方式给出，0 是北

pane.endAngle 是 x 轴极坐标或角度轴的最终度数，以度数的方式给出，0 是北
```
 var pane = {
   startAngle: -150, 
   endAngle: 150
 };
```

范例

下面的代码列出了 Highcharts 双轴车速表 的基本配置

<!doctype html>
<meta charset="utf-8" />
<title>Highcharts 基础教程 | 简单教程(www.twle.cn)</title>
<script src="https://cdn.hcharts.cn/highcharts/highcharts.js"></script>
<script src="https://cdn.hcharts.cn/highcharts/highcharts-more.js"></script>
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<div id="container" style="width: 550px; height: 400px; margin: 0 auto"></div>
<script>

var chart = {      
   type: 'gauge',
   plotBackgroundColor: null,
   plotBackgroundImage: null,
   plotBorderWidth: 0,
   plotShadow: false     
};
var credits = {
   enabled: false
};

var title = {
   text: '双轴车速表'
};

var pane = {
   startAngle: -150,
   endAngle: 150
};

// the value axis
var yAxis = [{
   min: 0,
   max: 200,
   lineColor: '#339',
   tickColor: '#339',
   minorTickColor: '#339',
   offset: -25,
   lineWidth: 2,
   labels: {
      distance: -20,
      rotation: 'auto'
   },
   tickLength: 5,
   minorTickLength: 5,
   endOnTick: false
}, {
   min: 0,
   max: 124,
   tickPosition: 'outside',
   lineColor: '#933',
   lineWidth: 2,
   minorTickPosition: 'outside',
   tickColor: '#933',
   minorTickColor: '#933',
   tickLength: 5,
   minorTickLength: 5,
   labels: {
      distance: 12,
      rotation: 'auto'
   },
   offset: -20,
   endOnTick: false
}];

var series= [{
   name: 'Speed',
   data: [80],
   dataLabels: {
      formatter: function () {
         var kmh = this.y,
         mph = Math.round(kmh * 0.621);
         return '<span style="color:#339">' + kmh + ' km/h</span><br/>' +
            '<span style="color:#933">' + mph + ' mph</span>';
      },
      backgroundColor: {
         linearGradient: {
            x1: 0,
            y1: 0,
            x2: 0,
            y2: 1
         },
         stops: [
            [0, '#DDD'],
            [1, '#FFF']
         ]
      }
   },
   tooltip: {
      valueSuffix: ' km/h'
   }
}];     

var chart1;      

// Add some life
var chartFunction = function (chart) {
   setInterval(function () {
      var point = chart1.series[0].points[0],
      newVal,
      inc = Math.round((Math.random() - 0.5) * 20);

      newVal = point.y + inc;
      if (newVal < 0 || newVal > 200) {
         newVal = point.y - inc;
      }
      point.update(newVal);
   }, 3000);
};

var options = {};

options.chart = chart;
options.title = title;
options.pane = pane;
options.yAxis = yAxis;
options.series = series;

var chart1 = Highcharts.chart('container',options);
</script>

运行范例 »

以上范例输出如下

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Highcharts 双轴车速表

配置

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