Javascript d3层次结构平均子节点值的能力

我有一个d3可视化，它有一个类似于下面的JSON对象，我想平均最低节点上的

score

值，并动态地将该平均值添加到上面的父节点……以此类推。看起来d3并没有一个简单的方法来做到这一点。我希望最终的JSON输出与第二个示例类似

 {
  "name": "A1",
  "children": [
    {
      "name": "B1",
      "children": [
        {
          "name": "B1-C1",
          "children": [
            {
              "name": "B1-C1-D1",
              "children": [
                {
                  "name": "B1-C1-D1-E1",
                  "value": 30,
                  "score": 0.8
                },
                {
                  "name": "B1-C1-D1-E2",
                  "value": 35,
                  "score": 0.5
                }
              ]
            },
            {
              "name": "B1-C1-D2",
              "children": [
                {
                  "name": "B1-C1-D2-E1",
                  "value": 31,
                  "score": 0.4
                },
                {
                  "name": "B1-C1-D2-E2",
                  "value": 23,
                  "score": 0.7
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}

我希望最终的JSON对象是什么样子的：

{
  "name": "A1",
  "scoreAvg": 0.625,
  "children": [
    {
      "name": "B1",
      "scoreAvg": 0.625,
      "children": [
        {
          "name": "B1-C1",
          "scoreAvg": 0.625,
          "children": [
            {
              "name": "B1-C1-D1",
              "scoreAvg": 0.7,
              "children": [
                {
                  "name": "B1-C1-D1-E1",
                  "value": 30,
                  "score": 0.8
                },
                {
                  "name": "B1-C1-D1-E2",
                  "value": 35,
                  "score": 0.6
                }
              ]
            },
            {
              "name": "B1-C1-D2",
              "scoreAvg": 0.55,
              "children": [
                {
                  "name": "B1-C1-D2-E1",
                  "value": 31,
                  "score": 0.4
                },
                {
                  "name": "B1-C1-D2-E2",
                  "value": 23,
                  "score": 0.7
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}

---

您可以使用递归函数：

const obj={
“名称”：“A1”，
“儿童”：[{
“名称”：“B1”，
“儿童”：[{
“名称”：“B1-C1”，
“儿童”：[{
“名称”：“B1-C1-D1”，
“儿童”：[{
“名称”：“B1-C1-D1-E1”，
“价值”：30，
“分数”：0.8
},
{
“名称”：“B1-C1-D1-E2”，
“价值”：35，
“分数”：0.5
}
]
},
{
“名称”：“B1-C1-D2”，
“儿童”：[{
“名称”：“B1-C1-D2-E1”，
“价值”：31，
“分数”：0.4
},
{
“名称”：“B1-C1-D2-E2”，
“价值”：23，
“分数”：0.7
}
]
}
]
}]
}]
}
函数getWithAverageScore（objToRecurse）{
//如果我有分数，我已经完成了
if（objToRecurse.score）{
返回OBJTORE诅咒；
}
//否则，我会让我的孩子知道他们的平均分数
const children=objToRecurse.children.map（getWithAverageScore）；
返回{
…对象诅咒，
儿童
//我将我的平均分数设置为他们的平均值（分数或平均分数）
scoreAvg:children.reduce（（total，{score，scoreAvg}）=>total+（score | | scoreAvg），0）/children.length
};
}
log（JSON.stringify（getWithAverageScore（obj），null，2））

let o = {
  "name": "A1",
  "children": [
    {
      "name": "B1",
      "children": [
        {
          "name": "B1-C1",
          "children": [
            {
              "name": "B1-C1-D1",
              "children": [
                {
                  "name": "B1-C1-D1-E1",
                  "value": 30,
                  "score": 0.8
                },
                {
                  "name": "B1-C1-D1-E2",
                  "value": 35,
                  "score": 0.5
                }
              ]
            },
            {
              "name": "B1-C1-D2",
              "children": [
                {
                  "name": "B1-C1-D2-E1",
                  "value": 31,
                  "score": 0.4
                },
                {
                  "name": "B1-C1-D2-E2",
                  "value": 23,
                  "score": 0.7
                }
              ]
            }
          ]
        }
      ]
    }
  ]
};


function avgUp(object){
  object.avgScore = 0;
if(object.children){
  for(child of object.children){
    object.avgScore += avgUp(child);
   }
object.avgScore =  object.avgScore /Math.max(1,object.children.length);
   return object.avgScore;
}else{
return object.score;
}
}

avgUp(o);

console.log(JSON.stringify(o));