position10.vl

{
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "data": {
        "values": [
            {
                "cat": 1,
                "empty": 0,
                "val": 10
            },
            {
                "cat": 2,
                "val": 20
            },
            {
                "cat": 3,
                "val": 30
            },
            {
                "cat": 4,
                "val": 15
            },
            {
                "cat": 5,
                "val": 12
            }
        ]
    },
    "encoding": {
        "x": {
            "field": "cat",
            "scale": {
                "align": 0.5,
                "paddingInner": 0.5
            },
            "type": "ordinal"
        },
        "y": {
            "field": "val",
            "type": "quantitative"
        }
    },
    "mark": "bar",
    "width": 400
}