curpointer.vl

{
    "transform": [
        {
            "filter": "datum.symbol==='GOOG'"
        }
    ],
    "config": {
        "view": {
            "cursor": "text"
        }
    },
    "mark": "line",
    "data": {
        "url": "https://vega.github.io/vega-lite/data/stocks.csv",
        "format": {
            "parse": {
                "date": "date"
            },
            "type": "csv"
        }
    },
    "width": 400,
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "selection": {
        "myBrush": {
            "mark": {
                "cursor": "pointer"
            },
            "encodings": [
                "x"
            ],
            "type": "interval"
        }
    },
    "encoding": {
        "x": {
            "field": "date",
            "type": "temporal"
        },
        "y": {
            "field": "price",
            "type": "quantitative"
        }
    }
}