hvega-0.12.0.7: tests/specs/time/timeUnitTransform.vl

{
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "data": {
        "url": "https://vega.github.io/vega-lite/data/seattle-weather.csv"
    },
    "encoding": {
        "x": {
            "axis": {
                "format": "%b"
            },
            "field": "month",
            "type": "temporal"
        },
        "y": {
            "aggregate": "max",
            "field": "temp_max",
            "type": "quantitative"
        }
    },
    "mark": "line",
    "transform": [
        {
            "as": "month",
            "field": "date",
            "timeUnit": "month"
        }
    ]
}