通过双击获取amcharts甘特图中的区段属性

// 创建甘特图实例
var chart = am4core.create("chartdiv", am4charts.XYChart);
chart.dataSource.url = "data.json";
chart.dataSource.parser = new am4core.JSONParser();
chart.dataSource.load();

// 注册双击事件监听器
chart.events.on("doublehit", function(ev) {
  // 获取双击位置的坐标信息
  var point = chart.plotContainer.pointToSvg(ev.pointer.point);
  var x = point.x;
  var y = point.y;

  // 遍历甘特图中的区段
  chart.series.each(function(series) {
    if (series instanceof am4charts.ColumnSeries) {
      series.columns.each(function(column) {
        // 判断双击位置是否在区段内部
        if (column.pixelX <= x && x <= column.pixelX + column.pixelWidth &&
            column.pixelY <= y && y <= column.pixelY + column.pixelHeight) {
          // 获取区段的属性信息
          var segment = column.dataItem.dataContext;
          console.log(segment);
        }
      });
    }
  });
});