带有数字格式（单位）的高位图表

Question

我正在使用Highcharts生成折线图。

而且我在numberFormat上遇到问题：

var test = 15975000;
numberFormat(test, 0,',','.');

结果是：15.975.000

但是我想将1000转换为1k，100000转换为100k，1000000转换为1m。我该如何解决这个问题？

Answer 1

numberFormat在Highcharts对象中可用。

Highcharts.numberFormat(test, 0,',','.');

示例http://jsfiddle.net/DaBYc/1/

yAxis: {
        labels: {
            formatter: function () {
                return Highcharts.numberFormat(this.value,0);
            }
        }
    },

Answer 2

编写您自己的formatter（请参阅此example）。

formatter: function() {
  result = this.value;
  if (this.value > 1000000) { result = Math.floor(this.value / 1000000) + "M" }
  else if (this.value > 1000) { result = Math.floor(this.value / 1000) + "k" }
  return result;
}

另请参见：How to format numbers similar to Stack Overflow reputation format

Answer 3

您只需要这样做：

                labels: {
                formatter: function() {
                     return abbrNum(this.value,2); // Need to call the function for each value shown by the chart
                }
            },

---

这里是用于转换要在javascript上插入的数据的函数：

    function abbrNum(number, decPlaces) {
    // 2 decimal places => 100, 3 => 1000, etc
    decPlaces = Math.pow(10,decPlaces);

    // Enumerate number abbreviations
    var abbrev = [ "k", "m", "b", "t" ];

    // Go through the array backwards, so we do the largest first
    for (var i=abbrev.length-1; i>=0; i--) {

        // Convert array index to "1000", "1000000", etc
        var size = Math.pow(10,(i+1)*3);

        // If the number is bigger or equal do the abbreviation
        if(size <= number) {
             // Here, we multiply by decPlaces, round, and then divide by decPlaces.
             // This gives us nice rounding to a particular decimal place.
             number = Math.round(number*decPlaces/size)/decPlaces;

             // Handle special case where we round up to the next abbreviation
             if((number == 1000) && (i < abbrev.length - 1)) {
                 number = 1;
                 i++;
             }

             // Add the letter for the abbreviation
             number += abbrev[i];

             // We are done... stop
             break;
        }
    }

    return number;
}

希望这项工作有效=）

Answer 4

如果要格式化Highstock图表：

   tooltip: {
        pointFormatter: function() {
          var result = this.y;
        let header = '<table>';
        let body = '<tr><td style = "color: ' + this.series.color + ';padding:0">'
          + this.series.name + ': </td><td style = "padding:0"><b>';
        if (result > 1000000) {
          result = Math.floor(result / 1000000) + "M"
        }
        else if (result > 1000) {
          result = Math.floor(result / 1000) + "k"
        }
        return header + body + result + '</b></td></tr></table>';
        }
    },

我在不影响数据分组功能或日期的情况下找到一种添加数百万的方法很麻烦。