NetChart replaceData()显示为空。如何动态替换数据？

// 创建一个NetChart实例
var chart = new NetChart({
  container: "chartContainer",
  data: {
    nodes: [
      { id: 1, label: "Node 1" },
      { id: 2, label: "Node 2" },
      { id: 3, label: "Node 3" }
    ],
    links: [
      { from: 1, to: 2 },
      { from: 2, to: 3 }
    ]
  }
});

// 定义一个新的数据集
var newData = {
  nodes: [
    { id: 4, label: "Node 4" },
    { id: 5, label: "Node 5" },
    { id: 6, label: "Node 6" }
  ],
  links: [
    { from: 4, to: 5 },
    { from: 5, to: 6 }
  ]
};

// 使用replaceData()方法替换数据
chart.replaceData(newData);