{
  "$schema": "https://vega.github.io/schema/vega/v5.json",
  "background": "white",
  "padding": 5,
  "width": 20,
  "height": 200,
  "style": "cell",
  "data": [
    {"name": "source_0", "values": [28, 55, 28, 91, 81, 55, 19, 81, 52]},
    {
      "name": "data_0",
      "source": "source_0",
      "transform": [
        {
          "type": "aggregate",
          "groupby": ["data"],
          "ops": ["mean"],
          "fields": ["data"],
          "as": ["mean_data"]
        },
        {
          "type": "filter",
          "expr": "isValid(datum[\"mean_data\"]) && isFinite(+datum[\"mean_data\"])"
        }
      ]
    }
  ],
  "marks": [
    {
      "name": "marks",
      "type": "rect",
      "style": ["tick"],
      "from": {"data": "data_0"},
      "encode": {
        "update": {
          "fill": {"value": "#4c78a8"},
          "tooltip": {
            "signal": "isValid(datum[\"data\"]) ? datum[\"data\"] : \"\"+datum[\"data\"]"
          },
          "ariaRoleDescription": {"value": "tick"},
          "description": {
            "signal": "\"Mean of data: \" + (format(datum[\"mean_data\"], \"\")) + \"; data: \" + (isValid(datum[\"data\"]) ? datum[\"data\"] : \"\"+datum[\"data\"])"
          },
          "xc": {"signal": "width", "mult": 0.5},
          "yc": {"scale": "y", "field": "mean_data"},
          "width": {"value": 15},
          "height": {"value": 1}
        }
      }
    }
  ],
  "scales": [
    {
      "name": "y",
      "type": "linear",
      "domain": {"data": "data_0", "field": "mean_data"},
      "range": [{"signal": "height"}, 0],
      "nice": true,
      "zero": true
    }
  ],
  "axes": [
    {
      "scale": "y",
      "orient": "left",
      "grid": true,
      "tickCount": {"signal": "ceil(height/40)"},
      "domain": false,
      "labels": false,
      "aria": false,
      "maxExtent": 0,
      "minExtent": 0,
      "ticks": false,
      "zindex": 0
    },
    {
      "scale": "y",
      "orient": "left",
      "grid": false,
      "title": "Mean of data",
      "labelOverlap": true,
      "tickCount": {"signal": "ceil(height/40)"},
      "zindex": 0
    }
  ]
}