Chargers.json

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  "height": 560,
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      "name": "germany",
      "url": "https://raw.githubusercontent.com/ElectricVehicleChargingCoverage/Visualization/main/data/germany.json",
      "format": {"type": "topojson", "feature": "DEU_adm2"},
      "transform": [
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      "name": "chargers",
      "url": "https://raw.githubusercontent.com/ElectricVehicleChargingCoverage/Visualization/main/data/chargers.csv",
      "format": {"type": "csv", "parse": "auto"},
      "transform": [
        {
          "type": "geopoint",
          "projection": "projection",
          "fields": ["lon", "lat"]
        }
      ]
    }
  ],

  "projections": [
    {
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      "scale": 1200,
      "translate": [{"signal": "width / 2"}, {"signal": "height / 2"}]
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  "marks": [
    {
      "type": "path",
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      "encode": {
        "enter": {
          "fill": {"value": "#dedede"},
          "stroke": {"value": "white"}
        },
        "update": {
          "path": {"field": "path"}
        }
      }
    },
    {
      "type": "symbol",
      "from": {"data": "chargers"},
      "encode": {
        "enter": {
          "size": {"value": 16},
          "fill": {"value": "steelblue"},
          "fillOpacity": {"value": 0.8},
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          "strokeWidth": {"value": 1.5}
        },
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