Javascript 日暴图-添加额外的数据层

我将遵循本教程：

它工作正常，但只有两个数据“环”。我想加上第三个。它正在从data.json文件中提取包含以下数据的数据：

{

    "name": "TOPICS", "children": [{
        "name": "Topic A",
        "children": [{"name": "Sub A1", "size": 5, "text": "A story", "sentiment": 1, "source": "dictionary"},
            {"name": "Sub A2", "size": 5, "text": "A note", "sentiment": 0.5, "source": "dictionary"}]
    }, {
        "name": "Topic B",
        "children": [{"name": "Sub B1", "size": 5, "text": "A vignette", "sentiment": 1, "source": "newspaper"},
            {"name": "Sub B3", "size": 5, "text": "A joke", "sentiment": 0.5, "source": "email"}]
    }, {
        "name": "Topic C",
        "children": [{"name": "Sub A1", "size": 5, "text": "A narrative", "sentiment": 1, "source": "newspaper"},
            {"name": "Sub A2", "size": 5, "text": "A chronology", "sentiment": 0.5, "source": "email"}]
    }]
}

---

我的问题是，如何在外部添加第三环数据？这似乎是JSON格式的，但我无法理解它。

鉴于您共享的特定bl.ock，您需要做的就是在您希望成为新层父级的项内创建一个

子项
数组，并删除父级的
size
属性：

例如，在子A1中创建一个新层：

{
    "name": "TOPICS",
    "children": [{
        "name": "Topic A",
        "children": [{
            "name": "Sub A1",
            "text": "A story",
            "sentiment": 0.8,
            "source": "dictionary",
            "children": [{
                "name": "New Layer 1",
                "size": 5,
                "text": "A story",
                "sentiment": 0.8,
                "source": "dictionary"
            },{ 
            ...etc
            }]
        }, {
            "name": "Sub A2",
            "size": 5,
            "text": "A note",
            "sentiment": 0.3,
            "source": "dictionary"
        }]
    },{
    ...etc
    }]
}

我只是在这里复制/粘贴。。。当然，您必须相应地调整这些值

以下是更新的bl.ocks：