line12.vl

{
    "transform": [
        {
            "as": "v",
            "calculate": "sin(datum.u)"
        },
        {
            "as": "w",
            "calculate": "cos(datum.u)"
        }
    ],
    "height": 150,
    "data": {
        "sequence": {
            "as": "u",
            "start": 0,
            "step": 0.1,
            "stop": 12.7
        }
    },
    "width": 300,
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "layer": [
        {
            "mark": "line",
            "encoding": {
                "x": {
                    "field": "u",
                    "title": "x",
                    "type": "quantitative"
                },
                "y": {
                    "field": "v",
                    "title": "sin(x)",
                    "type": "quantitative"
                }
            }
        },
        {
            "mark": {
                "stroke": "firebrick",
                "type": "line"
            },
            "encoding": {
                "x": {
                    "field": "u",
                    "title": "x",
                    "type": "quantitative"
                },
                "y": {
                    "field": "w",
                    "title": "cos(x)",
                    "type": "quantitative"
                }
            }
        }
    ],
    "description": "Plots a function using a generated sequence"
}