dist2.vl

{
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "data": {
        "url": "https://vega.github.io/vega-lite/data/movies.json"
    },
    "description": "Cumulative frequency distribution",
    "encoding": {
        "x": {
            "field": "IMDB_Rating",
            "type": "quantitative"
        },
        "y": {
            "field": "cumulativeCount",
            "type": "quantitative"
        }
    },
    "mark": "area",
    "transform": [
        {
            "frame": [
                null,
                0
            ],
            "sort": [
                {
                    "field": "IMDB_Rating",
                    "order": "ascending"
                }
            ],
            "window": [
                {
                    "as": "cumulativeCount",
                    "field": "count",
                    "op": "count"
                }
            ]
        }
    ]
}