{
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "data": {
        "values": [
            {
                "cat": "a",
                "val": 1,
                "x": 10,
                "y": 1
            },
            {
                "cat": "b",
                "val": 2,
                "x": 20,
                "y": 2
            },
            {
                "cat": "c",
                "val": 3,
                "x": 30,
                "y": 3
            },
            {
                "cat": "d",
                "val": 4,
                "x": 36,
                "y": 4
            }
        ]
    },
    "encoding": {
        "color": {
            "field": "cat",
            "type": "nominal"
        },
        "fill": {
            "value": "red"
        },
        "size": {
            "value": 2000
        },
        "stroke": {
            "field": "y",
            "type": "ordinal"
        },
        "x": {
            "field": "x",
            "type": "quantitative"
        },
        "y": {
            "field": "y",
            "type": "quantitative"
        }
    },
    "height": 200,
    "mark": {
        "stroke": "black",
        "type": "circle"
    },
    "width": 200
}