双轴车速表

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Highcharts 双轴车速表

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‘
};

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
};

实例

文件名：highcharts_guage_dualaxes.htm

<html>
<head>
<meta charset="UTF-8" />
<title>Highcharts 教程 | 菜鸟教程(bubuko.com)</title>
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="http://code.highcharts.com/highcharts.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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