{
    "mark": {
        "strokeWidth": 0.4,
        "stroke": "white",
        "type": "point",
        "filled": true
    },
    "data": {
        "url": "https://vega.github.io/vega-lite/data/cars.json"
    },
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "encoding": {
        "size": {
            "field": "Acceleration",
            "bin": true,
            "type": "quantitative"
        },
        "opacity": {
            "field": "Acceleration",
            "bin": true,
            "type": "quantitative"
        },
        "x": {
            "field": "Horsepower",
            "scale": {
                "domainMax": 300,
                "domainMin": -10
            },
            "type": "quantitative"
        },
        "y": {
            "field": "Miles_per_Gallon",
            "scale": {
                "rangeMax": 10,
                "rangeMin": 220
            },
            "type": "quantitative"
        }
    }
}