{
  "$schema": "https://vega.github.io/schema/vega/v6.json",
  "width": 300,
  "height": 100,
  "padding": 5,
  "signals": [
    {
      "name": "generate",
      "value": true,
      "bind": {
        "input": "checkbox",
        "name": "Включать внутренние узлы"
      }
    }
  ],
  "data": [
    {
      "name": "tree",
      "values": [
        {
          "id": "A",
          "job": "Doctor",
          "region": "East"
        },
        {
          "id": "B",
          "job": "Doctor",
          "region": "East"
        },
        {
          "id": "C",
          "job": "Lawyer",
          "region": "East"
        },
        {
          "id": "D",
          "job": "Lawyer",
          "region": "East"
        },
        {
          "id": "E",
          "job": "Doctor",
          "region": "West"
        },
        {
          "id": "F",
          "job": "Doctor",
          "region": "West"
        },
        {
          "id": "G",
          "job": "Lawyer",
          "region": "West"
        },
        {
          "id": "H",
          "job": "Lawyer",
          "region": "West"
        }
      ],
      "transform": [
        {
          "type": "nest",
          "generate": {
            "signal": "generate"
          },
          "keys": [
            "job",
            "region"
          ]
        },
        {
          "type": "tree",
          "method": "tidy",
          "size": [
            {
              "signal": "width"
            },
            {
              "signal": "height"
            }
          ]
        }
      ]
    },
    {
      "name": "links",
      "source": "tree",
      "transform": [
        {
          "type": "treelinks"
        },
        {
          "type": "linkpath"
        }
      ]
    }
  ],
  "scales": [
    {
      "name": "color",
      "type": "ordinal",
      "range": {
        "scheme": "category20"
      }
    }
  ],
  "marks": [
    {
      "type": "path",
      "from": {
        "data": "links"
      },
      "encode": {
        "update": {
          "stroke": {
            "value": "#ccc"
          },
          "path": {
            "field": "path"
          }
        }
      }
    },
    {
      "type": "symbol",
      "from": {
        "data": "tree"
      },
      "encode": {
        "update": {
          "fill": {
            "scale": "color",
            "field": "id"
          },
          "stroke": {
            "value": "white"
          },
          "size": {
            "value": 600
          },
          "x": {
            "field": "x"
          },
          "y": {
            "field": "y"
          }
        }
      }
    },
    {
      "type": "text",
      "from": {
        "data": "tree"
      },
      "encode": {
        "enter": {
          "text": {
            "field": "id"
          },
          "stroke": {
            "value": "white"
          },
          "fill": {
            "value": "white"
          },
          "align": {
            "value": "center"
          },
          "baseline": {
            "value": "middle"
          },
          "fontWeight": {
            "value": "normal"
          },
          "fontSize": {
            "value": 16
          }
        },
        "update": {
          "x": {
            "field": "x"
          },
          "y": {
            "field": "y"
          }
        }
      }
    }
  ]
}