对数 x 轴

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Highcharts 对数图表

以下实例演示了对数图表。

我们在前面的章节已经了解了 Highcharts 配置语法。接下来让我们来看下如何配置。

配置

配置 yAxis.type 为 ‘logarithmic‘。它定义了 x 轴类型。可选值有 "linear", "logarithmic", "datetime" 或 "category"。默认值为linear。

yAxis
var yAxis = {
   type: ‘logarithmic‘,
   minorTickInterval: 0.1
};

实例

文件名：highcharts_line_logarithmic.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>
</head>
<body>
<div id="container" style="width: 550px; height: 400px; margin: 0 auto"></div>
<script language="JavaScript">
$(document).ready(function() {  
   var title = {
      text: ‘对数实例(bubuko.com)‘   
   };
   var xAxis = {
      tickInterval: 1
   };
   var yAxis = {
      type: ‘logarithmic‘,
      minorTickInterval: 0.1
   };
   var tooltip = {
      headerFormat: ‘<b>{series.name}</b><br>‘,
      pointFormat: ‘x = {point.x}, y = {point.y}‘
   };
   var plotOptions = {
      spline: {
         marker: {
            enabled: true
         }
      }
   };
   var series= [{
         name: ‘data‘,
         data: [1, 2, 4, 8, 16, 32, 64, 128, 256, 512],
         pointStart: 1
      }
   ];     
      
   var json = {};   
   json.title = title;   
   json.tooltip = tooltip;
   json.xAxis = xAxis;
   json.yAxis = yAxis;  
   json.series = series;
   json.plotOptions = plotOptions;
   $(‘#container‘).highcharts(json);
  
});
</script>
</body>
</html>