Map the name of nodes onto links

Question

This is my data and I am trying to map the name of the nodes to the sources and targets of the links.

var x = {
  "nodes": [
    {
      "name": "Decision 3a"
    },
    {
      "name": "Req 1"
    },
    {
      "name": "Req 3c"
    },
    {
      "name": "Cloud Services"
    }
  ],
  "links": [
    {
      "source": "0",
      "target": "3",
      "value": 100
    },
    {
      "source": "4",
      "target": "2",
      "value": 100
   }
  ]
};

I want the object to look like this for my visualization--

var x = {
      "nodes": [
        {
          "name": "Decision 3a"
        },
        {
          "name": "Req 3"
        },
        {
          "name": "Req 3c"
        },
        {
          "name": "Req 3b"
        }
      ],
      "links": [
        {
          "source": "Decision 3a",
          "target": "Req 3c",
          "value": 100
        },
        {
          "source": "Cloud Services",
          "target": "Req 1",
          "value": 100
       }
      ]
    };

I tried adding the id to the nodes and then map them but in that case the id remain there in the nodes object.

First things first, there is no JSON in this question, that's a Javascript object — Liam, Nov 12 '18 at 11:18
Possible duplicate of [Access / process (nested) objects, arrays or JSON](https://stackoverflow.com/questions/11922383/access-process-nested-objects-arrays-or-json) — Liam, Nov 12 '18 at 11:19

score 0 · Accepted Answer · answered Nov 12 '18 at 11:30

you need to loop through the each object in the links array and get the index from the nodes array and assign that value to the links array.

i hope the below code solves the issue

var x = {
  "nodes": [
    {
      "name": "Decision 3a"
    },
    {
      "name": "Req 1"
    },
    {
      "name": "Req 3c"
    },
    {
      "name": "Req 4"
    },
    {
      "name": "Cloud Services"
    }
  ],
  "links": [
    {
      "source": "0",
      "target": "3",
      "value": 100
    },
    {
      "source": "4",
      "target": "2",
      "value": 100
   }
  ]
};

x.links.forEach(o => {
 let name = x.nodes[parseInt(o.source)].name;
 o["source"] = name;
})

console.log("output",x)

Map the name of nodes onto links

1 Answers1