Radial Tree

{
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  "usermeta": {
    "deneb": {
      "build": "1.1.0.0",
      "metaVersion": 1,
      "provider": "vega",
      "providerVersion": "5.21.0"
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    "interactivity": {
      "tooltip": true,
      "contextMenu": true,
      "selection": false,
      "dataPointLimit": 50
    },
    "information": {
      "name": "Radial Tree",
      "description": "[No Description Provided]",
      "author": "[No Author Details Provided]",
      "uuid": "36b03d45-b9af-40f2-b154-bc27cba35ddf",
      "generated": "2022-03-27T11:36:49.950Z"
    },
    "dataset": [
      {
        "key": "__0__",
        "name": "id",
        "description": "node id",
        "type": "numeric",
        "kind": "column"
      },
      {
        "key": "__1__",
        "name": "label",
        "description": "label name",
        "type": "text",
        "kind": "column"
      },
      {
        "key": "__2__",
        "name": "children",
        "description": "number of children",
        "type": "numeric",
        "kind": "measure"
      },
      {
        "key": "__3__",
        "name": "parentid",
        "description": "parent node id",
        "type": "numeric",
        "kind": "measure"
      }
    ]
  },
  "config": {
    "autosize": {
      "type": "fit",
      "contains": "padding"
    }
  },
  "width": 720,
  "height": 720,
  "padding": 5,
  "autosize": "none",
  "signals": [
    {"name": "labels", "value": true},
    {"name": "radius", "value": 280},
    {"name": "extent", "value": 360},
    {"name": "rotate", "value": 0},
    {
      "name": "layout",
      "value": "cluster"
    },
    {
      "name": "links",
      "value": "diagonal"
    },
    {
      "name": "originX",
      "update": "width / 2"
    },
    {
      "name": "originY",
      "update": "height / 2"
    }
  ],
  "data": [
    {
      "name": "dataset",
      "transform": [
        {
          "type": "stratify",
          "key": "__0__",
          "parentKey": "__3__"
        },
        {
          "type": "tree",
          "method": {
            "signal": "layout"
          },
          "size": [
            1,
            {"signal": "radius"}
          ],
          "as": [
            "alpha",
            "radius",
            "depth",
            "children"
          ]
        },
        {
          "type": "formula",
          "expr": "(rotate + extent * datum.alpha + 270) % 360",
          "as": "angle"
        },
        {
          "type": "formula",
          "expr": "PI * datum.angle / 180",
          "as": "radians"
        },
        {
          "type": "formula",
          "expr": "inrange(datum.angle, [90, 270])",
          "as": "leftside"
        },
        {
          "type": "formula",
          "expr": "originX + datum.radius * cos(datum.radians)",
          "as": "x"
        },
        {
          "type": "formula",
          "expr": "originY + datum.radius * sin(datum.radians)",
          "as": "y"
        }
      ]
    },
    {
      "name": "links",
      "source": "dataset",
      "transform": [
        {"type": "treelinks"},
        {
          "type": "linkpath",
          "shape": {"signal": "links"},
          "orient": "radial",
          "sourceX": "source.radians",
          "sourceY": "source.radius",
          "targetX": "target.radians",
          "targetY": "target.radius"
        }
      ]
    }
  ],
  "scales": [
    {
      "name": "color",
      "type": "linear",
      "range": {"scheme": "magma"},
      "domain": {
        "data": "dataset",
        "field": "depth"
      },
      "zero": true
    }
  ],
  "marks": [
    {
      "type": "path",
      "from": {"data": "links"},
      "encode": {
        "update": {
          "x": {"signal": "originX"},
          "y": {"signal": "originY"},
          "path": {"field": "path"},
          "stroke": {"value": "#ccc"}
        }
      }
    },
    {
      "type": "symbol",
      "from": {"data": "dataset"},
      "encode": {
        "enter": {
          "size": {"value": 100},
          "stroke": {"value": "#fff"}
        },
        "update": {
          "x": {"field": "x"},
          "y": {"field": "y"},
          "fill": {
            "scale": "color",
            "field": "depth"
          }
        }
      }
    },
    {
      "type": "text",
      "from": {"data": "dataset"},
      "encode": {
        "enter": {
          "text": {"field": "__1__"},
          "fontSize": {"value": 9},
          "baseline": {
            "value": "middle"
          }
        },
        "update": {
          "x": {"field": "x"},
          "y": {"field": "y"},
          "dx": {
            "signal": "(datum.leftside ? -1 : 1) * 6"
          },
          "angle": {
            "signal": "datum.leftside ? datum.angle - 180 : datum.angle"
          },
          "align": {
            "signal": "datum.leftside ? 'right' : 'left'"
          },
          "opacity": {
            "signal": "labels ? 1 : 0"
          }
        }
      }
    }
  ]
}