如何在AmCharts中为所有条形图、饼图显示LegendText

// 创建一个CategoryAxis对象
var categoryAxis = chart.xAxes.push(new am4charts.CategoryAxis());

// 设置labelFunction来自定义刻度文本
categoryAxis.labelFunction = function(value, formattedValue) {
  // 根据需要设置每个条形图的LegendText
  if (value === "category1") {
    return "条形图1";
  } else if (value === "category2") {
    return "条形图2";
  } else {
    return formattedValue;
  }
};

// 创建一个PieSeries对象
var pieSeries = chart.series.push(new am4charts.PieSeries());

// 设置dataFields来定义饼图的数据字段
pieSeries.dataFields.value = "value";
pieSeries.dataFields.category = "category";
pieSeries.dataFields.legendText = "LegendText";