AmCharts 对数据排序后展示

在官网看到的例子

给chart添加一个排序功能的handler

 AmCharts.addInitHandler( function(chart){
     if (chart.orderByField === undefined){
         return;
     }
     chart.dataProvider.sort(function(a,b){
         if (a[ chart.orderByField ] > b[ chart.orderByField ]){
             return -1;
         }
         else if ( a[ chart.orderByField ] == b[ chart.orderByField ]){
             return 0;
         }
         return 1;
     });
 }, ["serial"]);

配置chart（根据orderByField这个字段进行排序）

var chart = AmCharts.makeChart( "chartdiv", {
  "type": "serial",
  "theme": "light",
  "dataProvider": data,
  "categoryField": "key",
  "sortColumns": true,
  "orderByField": "doc_count",
  "graphs": [ {
    "balloonText": "[[category]]: <b> [[value]] </b>",
    "valueField": "doc_count",
    "fillColorsField": "color",
    "fillAlphas": 0.9,
    "fillAlpha": 0.2,
    "type": "column"
  } ],
  "categoryAxis": {
    "gridPosition": "start",
    "labelRotation": 45
  }
});