Javascript 读取D3.js中捆绑包布局中的JSON文件时出错

我正在尝试使用D3.js创建捆绑包布局

我的以下代码位于：

我从中获得了示例json文件。它很好用

现在，当我尝试使用json文件时，会出现以下错误：

Uncaught TypeError: Cannot read property 'parent' of undefined 

我的json文件如下所示：

[
{"name":"flare.analytics.A","size":3938,"imports":["flare.analytics.B,flare.analytics.C"]},
{"name":"flare.analytics.B","size":3812,"imports":["flare.analytics.C,flare.analytics.D"]},
{"name":"flare.analytics.C","size":3812,"imports":["flare.analytics.D,flare.analytics.E"]},
{"name":"flare.analytics.D","size":743, "imports":["flare.analytics.E,flare.analytics.F"]},
{"name":"flare.analytics.E","size":3534,"imports":["flare.analytics.F,flare.analytics.G"]},
{"name":"flare.analytics.F","size":5731,"imports":["flare.analytics.G,flare.analytics.H"]},
{"name":"flare.analytics.G","size":7840,"imports":["flare.analytics.H,flare.analytics.I"]},
{"name":"flare.analytics.H","size":5914,"imports":["flare.analytics.I,flare.analytics.A"]},
{"name":"flare.analytics.I","size":3416,"imports":["flare.analytics.B,flare.analytics.A"]}
]

---

有人能告诉我我的json文件有什么问题吗？

您只需要用引号来封装json中的不同依赖项和依赖项，例如

flare.analytics.A","size":3938,"imports":["flare.analytics.B","flare.analytics.C"]}...

而不是

flare.analytics.A","size":3938,"imports":["flare.analytics.B,flare.analytics.C"]}

看看它在哪里工作

---

只是一个简单的问题，与此不完全相关，但我在玩这个d3示例，我只是想知道“size”参数在示例中的作用。当我改变参数时，它是无效的。只是好奇。提前谢谢。