{
  "$schema": "https://vega.github.io/schema/vega/v5.json",
  "background": "white",
  "padding": 5,
  "width": 200,
  "height": 200,
  "style": "cell",
  "data": [
    {"name": "source_0", "url": "data/cars.json", "format": {"type": "json"}},
    {
      "name": "data_0",
      "source": "source_0",
      "transform": [
        {
          "type": "filter",
          "expr": "isValid(datum[\"Horsepower\"]) && isFinite(+datum[\"Horsepower\"]) && isValid(datum[\"Miles_per_Gallon\"]) && isFinite(+datum[\"Miles_per_Gallon\"])"
        }
      ]
    },
    {
      "name": "data_1",
      "source": "source_0",
      "transform": [
        {
          "type": "aggregate",
          "groupby": [],
          "ops": ["stdev", "mean"],
          "fields": ["Miles_per_Gallon", "Miles_per_Gallon"],
          "as": ["extent_Miles_per_Gallon", "center_Miles_per_Gallon"]
        },
        {
          "type": "formula",
          "expr": "datum[\"center_Miles_per_Gallon\"] + datum[\"extent_Miles_per_Gallon\"]",
          "as": "upper_Miles_per_Gallon"
        },
        {
          "type": "formula",
          "expr": "datum[\"center_Miles_per_Gallon\"] - datum[\"extent_Miles_per_Gallon\"]",
          "as": "lower_Miles_per_Gallon"
        },
        {
          "type": "filter",
          "expr": "isValid(datum[\"lower_Miles_per_Gallon\"]) && isFinite(+datum[\"lower_Miles_per_Gallon\"])"
        }
      ]
    }
  ],
  "marks": [
    {
      "name": "layer_0_marks",
      "type": "symbol",
      "style": ["point"],
      "from": {"data": "data_0"},
      "encode": {
        "update": {
          "opacity": {"value": 0.7},
          "fill": {"value": "transparent"},
          "stroke": {"value": "#4c78a8"},
          "ariaRoleDescription": {"value": "point"},
          "description": {
            "signal": "\"Horsepower: \" + (format(datum[\"Horsepower\"], \"\")) + \"; Miles_per_Gallon: \" + (format(datum[\"Miles_per_Gallon\"], \"\"))"
          },
          "x": {"scale": "x", "field": "Horsepower"},
          "y": {"scale": "y", "field": "Miles_per_Gallon"}
        }
      }
    },
    {
      "name": "layer_1_layer_0_marks",
      "type": "rect",
      "style": ["rect", "errorband-band"],
      "from": {"data": "data_1"},
      "encode": {
        "update": {
          "opacity": {"value": 0.3},
          "fill": {"value": "#4c78a8"},
          "tooltip": {
            "signal": "{\"Mean of Miles per Gallon\": format(datum[\"center_Miles_per_Gallon\"], \"\"), \"Mean + stdev of Miles per Gallon\": format(datum[\"upper_Miles_per_Gallon\"], \"\"), \"Mean - stdev of Miles per Gallon\": format(datum[\"lower_Miles_per_Gallon\"], \"\")}"
          },
          "description": {
            "signal": "\"Miles per Gallon: \" + (format(datum[\"lower_Miles_per_Gallon\"], \"\")) + \"; upper_Miles_per_Gallon: \" + (format(datum[\"upper_Miles_per_Gallon\"], \"\")) + \"; Mean of Miles per Gallon: \" + (format(datum[\"center_Miles_per_Gallon\"], \"\")) + \"; Mean + stdev of Miles per Gallon: \" + (format(datum[\"upper_Miles_per_Gallon\"], \"\")) + \"; Mean - stdev of Miles per Gallon: \" + (format(datum[\"lower_Miles_per_Gallon\"], \"\"))"
          },
          "x": {"field": {"group": "width"}},
          "x2": {"value": 0},
          "y": {"scale": "y", "field": "lower_Miles_per_Gallon"},
          "y2": {"scale": "y", "field": "upper_Miles_per_Gallon"}
        }
      }
    }
  ],
  "scales": [
    {
      "name": "x",
      "type": "linear",
      "domain": {"data": "data_0", "field": "Horsepower"},
      "range": [0, {"signal": "width"}],
      "nice": true,
      "zero": true
    },
    {
      "name": "y",
      "type": "linear",
      "domain": {
        "fields": [
          {"data": "data_0", "field": "Miles_per_Gallon"},
          {"data": "data_1", "field": "lower_Miles_per_Gallon"},
          {"data": "data_1", "field": "upper_Miles_per_Gallon"}
        ]
      },
      "range": [{"signal": "height"}, 0],
      "nice": true,
      "zero": true
    }
  ],
  "axes": [
    {
      "scale": "x",
      "orient": "bottom",
      "gridScale": "y",
      "grid": true,
      "tickCount": {"signal": "ceil(width/40)"},
      "domain": false,
      "labels": false,
      "aria": false,
      "maxExtent": 0,
      "minExtent": 0,
      "ticks": false,
      "zindex": 0
    },
    {
      "scale": "y",
      "orient": "left",
      "gridScale": "x",
      "grid": true,
      "tickCount": {"signal": "ceil(height/40)"},
      "domain": false,
      "labels": false,
      "aria": false,
      "maxExtent": 0,
      "minExtent": 0,
      "ticks": false,
      "zindex": 0
    },
    {
      "scale": "x",
      "orient": "bottom",
      "grid": false,
      "title": "Horsepower",
      "labelFlush": true,
      "labelOverlap": true,
      "tickCount": {"signal": "ceil(width/40)"},
      "zindex": 0
    },
    {
      "scale": "y",
      "orient": "left",
      "grid": false,
      "title": "Miles per Gallon",
      "labelOverlap": true,
      "tickCount": {"signal": "ceil(height/40)"},
      "zindex": 0
    }
  ]
}