如何在Highcharts动态地改变y轴的单位？

问题描述

我有一个用于y轴的格式化程序：

  yAxis：{
 title：{
 text：'自定义标题'
}，
标签：{
 formatter：function（）{
 var maxElement; //我想将它设置为y轴标签处的最大值
 
 if（maxElement> gb）{
 return（this .value / gb）.toFixed（1）+GB; 
} else if（maxElement> mb）{
 return（this.value / mb）.toFixed（1）+MB; 
} else if（maxElement> kb）{
 return（this.value / kb）.toFixed（1）+KB; 
} else {
 return（this.value）+B; 
} 
} 
}，
 ... 
  

我在这里问了一个问题： 。

How can I change the unit at y axis dynamically at Highcharts?

I have a formatter for y axis:

 yAxis:{
        title:{
            text:'Custom Title'
        },
        labels: {
            formatter: function () {
                var maxElement;//I want to set it to max value at y axis labels

                if(maxElement > gb){
                    return (this.value / gb).toFixed(1) + " GB";
                }else if(maxElement > mb){
                    return (this.value / mb).toFixed(1) + " MB";
                }else if(maxElement > kb){
                    return (this.value / kb).toFixed(1) + " KB";
                } else {
                    return (this.value) + " B";
                }
            }
        },
      ...

I asked a question here: How can I get the max value of a y axis at highcharts? about how to get the max value at y axis labels. However I think I should have sth like beforeLoad and beforeRedraw methods.

How can I change dynamically units of y axis labels (because if you disable/close series at right side max y axis label changes)?

Other solutions about my problem is welcome.

解决方案

This case you can get the max by the following line:
this.axis.max;

So your function should be:

formatter: function() {
    var maxElement = this.axis.max;
    if (maxElement > gb) {
        return (this.value / gb).toFixed(1) + " GB";
    } else if (maxElement > mb) {
        return (this.value / mb).toFixed(1) + " MB";
    } else if (maxElement > kb) {
        return (this.value / kb).toFixed(1) + " KB";
    } else {
        return (this.value) + " B";
    }
}​

You can see it working here.

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