rows_concat

rows_concat.json

{
  "$schema": "https://vega.github.io/schema/vega/v5.json",
  "description": "A basic bar chart example, with value labels shown upon pointer hover.",
  "width": 400,
  "height": 200,
  "padding": 5,
  "data": [
    {
      "name": "table",
      "values": [
        {"category": "A", "amount": 28},
        {"category": "B", "amount": 55},
        {"category": "C", "amount": 43},
        {"category": "D", "amount": 91},
        {"category": "E", "amount": 81},
        {"category": "F", "amount": 53},
        {"category": "G", "amount": 19},
        {"category": "H", "amount": 87}
      ]
    }
  ],
  "scales": [
    {
      "name": "xscale",
      "type": "band",
      "domain": {"data": "table", "field": "category"},
      "range": "width",
      "padding": 0.05,
      "round": true
    },
    {
      "name": "yscale",
      "domain": {"data": "table", "field": "amount"},
      "nice": true,
      "range": "height"
    }
  ],
  "axes": [
    {"orient": "bottom", "scale": "xscale"},
    {"orient": "left", "scale": "yscale"}
  ],
  "layout": {"columns": 1},
  "marks": [
    {
      "type": "group",
      "name": "table1",
      "style": "cell",
      "title": {"text": "First Bar Plot", "frame": "group"},
      "encode": {
        "update": {"width": {"signal": "width"}, "height": {"signal": "height"}}
      },
      "marks": [
        {
          "type": "rect",
          "from": {"data": "table"},
          "encode": {
            "enter": {
              "x": {"scale": "xscale", "field": "category"},
              "width": {"scale": "xscale", "band": 1},
              "y": {"scale": "yscale", "field": "amount"},
              "y2": {"scale": "yscale", "value": 0}
            },
            "update": {"fill": {"value": "steelblue"}},
            "hover": {"fill": {"value": "red"}}
          }
        }
      ]
    },
    {
      "type": "group",
      "name": "table2",
      "style": "cell",
      "title": {"text": "Second Bar Plot"},
      "encode": {
        "update": {"width": {"signal": "width"}, "height": {"signal": "height"}}
      },
      "marks": [
        {
          "type": "rect",
          "from": {"data": "table"},
          "encode": {
            "enter": {
              "x": {"scale": "xscale", "field": "category"},
              "width": {"scale": "xscale", "band": 1},
              "y": {"scale": "yscale", "field": "amount"},
              "y2": {"scale": "yscale", "value": 0}
            },
            "update": {"fill": {"value": "steelblue"}},
            "hover": {"fill": {"value": "red"}}
          }
        }
      ]
    }
  ]
}