window6.vl

{
    "transform": [
        {
            "window": [
                {
                    "op": "rank",
                    "as": "rank"
                }
            ],
            "sort": [
                {
                    "field": "score",
                    "order": "descending"
                }
            ]
        },
        {
            "filter": "datum.rank <= 5"
        }
    ],
    "mark": "bar",
    "data": {
        "values": [
            {
                "score": 100,
                "student": "A"
            },
            {
                "score": 56,
                "student": "B"
            },
            {
                "score": 88,
                "student": "C"
            },
            {
                "score": 65,
                "student": "D"
            },
            {
                "score": 45,
                "student": "E"
            },
            {
                "score": 23,
                "student": "F"
            },
            {
                "score": 66,
                "student": "G"
            },
            {
                "score": 67,
                "student": "H"
            },
            {
                "score": 13,
                "student": "I"
            },
            {
                "score": 12,
                "student": "J"
            },
            {
                "score": 50,
                "student": "K"
            },
            {
                "score": 78,
                "student": "L"
            },
            {
                "score": 66,
                "student": "M"
            },
            {
                "score": 30,
                "student": "N"
            },
            {
                "score": 97,
                "student": "O"
            },
            {
                "score": 75,
                "student": "P"
            },
            {
                "score": 24,
                "student": "Q"
            },
            {
                "score": 42,
                "student": "R"
            },
            {
                "score": 76,
                "student": "S"
            },
            {
                "score": 78,
                "student": "T"
            },
            {
                "score": 21,
                "student": "U"
            },
            {
                "score": 46,
                "student": "V"
            }
        ]
    },
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "encoding": {
        "x": {
            "field": "score",
            "type": "quantitative"
        },
        "y": {
            "field": "student",
            "sort": {
                "op": "mean",
                "field": "score",
                "order": "descending"
            },
            "type": "nominal"
        }
    }
}