双轴车速表

Highcharts 测量图Highcharts 测量图

以下实例演示了双轴车速表。

我们在前面的章节已经了解了 Highcharts 基本配置语法。接下来让我们来看下其他的配置。

配置

chart.type 配置

配置 chart 的 type 为 ''gauge'' 。chart.type 描述了图表类型。默认值为 "line"。

var chart = {
   type: ''gauge''
};
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pane 配置

pane 只适用在极坐标图和角度测量仪。此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。

var pane = {
  startAngle: -150,  // x轴或测量轴的开始度数，以度数的方式给出。0是北
  endAngle: 150      //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
};
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实例

文件名：highcharts_guage_dualaxes.htm

<html>
<head>
<meta charset="UTF-8" />
<title>Highcharts 教程 | W3xue教程(w3xue.com)</title>
<script src="/js/jquery-2.1.4.min.js"></script>
<script src="/js/hc/highcharts5.0.6.js"></script>
<script src="http://code.highcharts.com/highcharts-more.js"></script>     
</head>
<body>
<div id="container" style="width: 550px; height: 400px; margin: 0 auto"></div>
<script language="JavaScript">
$(document).ready(function() {  
   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 json = {};   
   json.chart = chart; 
   json.credits = credits;
   json.title = title;       
   json.pane = pane; 
   json.yAxis = yAxis;    
   json.series = series;      
   
   // Add some life
   var chartFunction = function (chart) {
      setInterval(function () {
         var point = chart.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);
   };
   
   $(''#container'').highcharts(json, chartFunction);  
});
</script>
</body>
</html>
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我来试一下

以上实例输出结果为：

Highcharts 测量图Highcharts 测量图