由于数据点之间的巨大差异，Amcharts 列不可见

如何解决由于数据点之间的巨大差异，Amcharts 列不可见

我正在使用 Amcharts 创建柱形图，由于数据点之间的巨大差异，一些条形图不可见。

举一个带有演示数据集的例子，你可以看看。

var chart = AmCharts.makeChart("chartdiv",{
  "type": "serial","dataProvider": [{
    "country": "USA","visits": 20222
  },{
    "country": "China","visits": 1882
  },{
    "country": "Japan","visits": 1809
  },{
    "country": "Germany","visits": 1322
  },{
    "country": "UK","visits": 1122
  },{
    "country": "France","visits": 1114
  },{
    "country": "India","visits": 984
  },{
    "country": "Spain","visits": 10
  },{
    "country": "Netherlands","visits": 665
  },{
    "country": "Russia","visits": 580
  },{
    "country": "South Korea","visits": 0.4
  },{
    "country": "Canada","visits": 11
  },{
    "country": "Brazil","visits": 10
  }],"valueAxes": [{
    "gridColor": "#FFFFFF","gridAlpha": 0.2,"dashLength": 0
  }],"gridAboveGraphs": true,"startDuration": 1,"graphs": [{
    "balloonText": "[[category]]: <b>[[value]]</b>","fillAlphas": 0.8,"lineAlpha": 0.2,"type": "column","valueField": "visits","labelPosition": "inside","labelRotation": 90,"showAllValueLabels": true
  }],"chartCursor": {
    "categoryBalloonEnabled": false,"cursorAlpha": 0,"zoomable": false
  },"categoryField": "country","categoryAxis": {
    "gridPosition": "start","gridAlpha": 0,"tickPosition": "start","tickLength": 20
  }
});

#chartdiv {
  width: 300px;
  height: 400px;
}

<script src="https://www.amcharts.com/lib/3/amcharts.js"></script>
<script src="https://www.amcharts.com/lib/3/serial.js"></script>
<div id="chartdiv"></div>   

如上述数据集

• 美国的最大值为 20222

• 韩国的最小值为 0.4

由于这种异常，有一些列不可见但存在，如何使其可见？