在加载事件中，您可以计算节点高度，并更新chart.height，以调整组织节点和链接的外观，尝试操作nodeWidth和nodeHeight。

chart: {
    width: 600,
    inverted: true,
    events: {
      load() {
        let chart = this,
          numnode = 0,
          series = chart.series[0],
          newHeight = series.options.nodeHeight * series.nodeColumns[2].length;

        for (i in series.nodeColumns) {
          numnode += series.nodeColumns[i].length
        }
        newHeight = series.options.nodeHeight * numnode
        chart.update({
          chart: {
            height: newHeight
          }
        })
      }
    }
  },
  series: [{
    ...,
    nodeWidth: 100,
    nodeHeight: 150,
  }],

});

现场演示：https://jsfiddle.net/BlackLabel/abfdrLu4/