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d3.stratify(处理行列式层次型数据) #97

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ckinmind opened this issue Feb 15, 2019 · 0 comments

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ckinmind commented Feb 15, 2019 •

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这个方法是v4版本新增的，用于处理行列式层次型数据（以前只支持JSON），现在可以支持csv格式的，用于解析这样的数据: 数据是打平的，但是每组数据都有id和parentId，这个方法就能帮你把这样的数据结构处理成嵌套的结构，父子包含结构

d3.stratify - 创建一个层操作符。
stratify - 从表格式的数据构造一个根节点。
stratify.id - 设置节点ID访问器。
stratify.parentId - 设置父节点ID访问器

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