csv 数据到 d3 中的嵌套 json 树 [英] csv data to nested json tree in d3
问题描述
我有一个像这样的 csv 数据文件
<前>根,y,i,5根,c,b,a,7根,c,b,z,2我想生成类似于 flare.json 的内容数据文件如下:
<前>{"name": "root",孩子们": [{"name": "y",孩子们": [{"name": "我",价值":5}]},{名称:"c",孩子们": [{"name": "b",孩子们": [{"name": "a",价值":7},{"name": "z",价值":2}]}]}]}我见过其他人解决了[类似问题](从csv 在 d3.js 中,但数据是均匀的,即每个 csv 行都恰好具有 n
元素.我有不同长度的 n
.>
有人可以帮忙吗?
我会使用 d3 nest 函数来完成这个.您可以在此处找到有关如何使用它的文档:http://bl.ocks.org/phoebebright/raw/3176159/
解决方案如下所示:
var nested_data = d3.nest().key(function(d) { return d[0]; }).key(function(d) { return d[1]; }).entries(csv_data);
I have a csv data file which looks like this
root,y,i,5 root,c,b,a,7 root,c,b,z,2
I'd like to generate something similar to the flare.json data file like this:
{ "name": "root", "children": [ { "name": "y", "children": [ { "name": "i", "value": 5 } ] }, { name: "c", "children": [ { "name": "b", "children": [ { "name": "a", "value": 7 }, { "name": "z", "value": 2 } ] } ] } ] }
I've seen others address a [similar question](Create hierarchy from csv in d3.js, but the data is even in the sense that every csv row has exactly n
elements. I have varied lengths of n
.
Can anyone help?
I would use the d3 nest function to accomplish this. You can find documentation on how to use it here: http://bl.ocks.org/phoebebright/raw/3176159/
The solution would look something like this:
var nested_data = d3.nest()
.key(function(d) { return d[0]; })
.key(function(d) { return d[1]; })
.entries(csv_data);
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