repeat2.vl

{
    "transform": [
        {
            "filter": "datum.location === 'Seattle'"
        }
    ],
    "data": {
        "url": "https://vega.github.io/vega-lite/data/weather.csv"
    },
    "vconcat": [
        {
            "mark": "bar",
            "encoding": {
                "x": {
                    "field": "date",
                    "timeUnit": "month",
                    "type": "ordinal"
                },
                "y": {
                    "field": "precipitation",
                    "aggregate": "mean",
                    "type": "quantitative"
                }
            }
        },
        {
            "mark": "point",
            "encoding": {
                "size": {
                    "aggregate": "count",
                    "type": "quantitative"
                },
                "x": {
                    "field": "temp_min",
                    "bin": true,
                    "type": "quantitative"
                },
                "y": {
                    "field": "temp_max",
                    "bin": true,
                    "type": "quantitative"
                }
            }
        }
    ],
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "description": "Two vertically concatenated charts that show a histogram of precipitation in Seattle and the relationship between min and max temperature"
}