{
  "$schema": "https://vega.github.io/schema/vega/v5.json",
  "background": "white",
  "padding": 5,
  "width": 200,
  "height": 200,
  "style": "cell",
  "data": [
    {
      "name": "source_0",
      "url": "https://raw.githubusercontent.com/vega/vega-datasets/master/data/driving.json",
      "format": {"type": "json"}
    },
    {
      "name": "data_0",
      "source": "source_0",
      "transform": [
        {
          "type": "filter",
          "expr": "isValid(datum[\"miles\"]) && isFinite(+datum[\"miles\"]) && isValid(datum[\"gas\"]) && isFinite(+datum[\"gas\"])"
        }
      ]
    }
  ],
  "marks": [
    {
      "name": "layer_0_marks",
      "type": "line",
      "style": ["line"],
      "sort": {"field": ["datum[\"year\"]"], "order": ["ascending"]},
      "from": {"data": "source_0"},
      "encode": {
        "update": {
          "stroke": {"value": "#4c78a8"},
          "description": {
            "signal": "\"miles: \" + (format(datum[\"miles\"], \"\")) + \"; gas: \" + (format(datum[\"gas\"], \"\")) + \"; year: \" + (isValid(datum[\"year\"]) ? datum[\"year\"] : \"\"+datum[\"year\"])"
          },
          "x": {"scale": "x", "field": "miles"},
          "y": {"scale": "y", "field": "gas"},
          "defined": {
            "signal": "isValid(datum[\"miles\"]) && isFinite(+datum[\"miles\"]) && isValid(datum[\"gas\"]) && isFinite(+datum[\"gas\"])"
          }
        }
      }
    },
    {
      "name": "layer_1_marks",
      "type": "symbol",
      "style": ["point"],
      "sort": {"field": ["datum[\"year\"]"], "order": ["ascending"]},
      "from": {"data": "data_0"},
      "encode": {
        "update": {
          "opacity": {"value": 1},
          "fill": {"value": "#4c78a8"},
          "ariaRoleDescription": {"value": "point"},
          "description": {
            "signal": "\"miles: \" + (format(datum[\"miles\"], \"\")) + \"; gas: \" + (format(datum[\"gas\"], \"\")) + \"; year: \" + (isValid(datum[\"year\"]) ? datum[\"year\"] : \"\"+datum[\"year\"])"
          },
          "x": [
            {
              "test": "!isValid(datum[\"miles\"]) || !isFinite(+datum[\"miles\"])",
              "value": 0
            },
            {"scale": "x", "field": "miles"}
          ],
          "y": [
            {
              "test": "!isValid(datum[\"gas\"]) || !isFinite(+datum[\"gas\"])",
              "field": {"group": "height"}
            },
            {"scale": "y", "field": "gas"}
          ]
        }
      }
    }
  ],
  "scales": [
    {
      "name": "x",
      "type": "linear",
      "domain": {
        "fields": [
          {"data": "source_0", "field": "miles"},
          {"data": "data_0", "field": "miles"}
        ]
      },
      "range": [0, {"signal": "width"}],
      "zero": false,
      "nice": true
    },
    {
      "name": "y",
      "type": "linear",
      "domain": {
        "fields": [
          {"data": "source_0", "field": "gas"},
          {"data": "data_0", "field": "gas"}
        ]
      },
      "range": [{"signal": "height"}, 0],
      "zero": false,
      "nice": 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": "miles",
      "labelFlush": true,
      "labelOverlap": true,
      "tickCount": {"signal": "ceil(width/40)"},
      "zindex": 0
    },
    {
      "scale": "y",
      "orient": "left",
      "grid": false,
      "title": "gas",
      "labelOverlap": true,
      "tickCount": {"signal": "ceil(height/40)"},
      "zindex": 0
    }
  ]
}