{
  "widgettype": "ChartScatter",
  "options": {
    "data": {
      "datasets": [
        {
          "label": "数据点",
          "data": [{"x": 10, "y": 20}, {"x": 15, "y": 25}, {"x": 20, "y": 30}]
        }
      ]
    },
    "width": "400px",
    "height": "300px"
  }
}