data7.vl

{
    "mark": "bar",
    "data": {
        "url": "data/dataTest.json"
    },
    "$schema": "https://vega.github.io/schema/vega-lite/v3.json",
    "encoding": {
        "x": {
            "field": "cat",
            "type": "nominal"
        },
        "y": {
            "field": "val",
            "type": "quantitative"
        }
    }
}