# https://altair-viz.github.io/gallery/violin_plot.html

import altair as alt
from vega_datasets import data

alt.Chart(data.cars()).transform_density(
    "Miles_per_Gallon",
    as_=["Miles_per_Gallon", "density"],
    extent=[5, 50],
    groupby=["Origin"],
).mark_area(orient="horizontal").encode(
    y="Miles_per_Gallon:Q",
    color="Origin:N",
    x=alt.X(
        "density:Q",
        stack="center",
        impute=None,
        title=None,
        axis=alt.Axis(labels=False, values=[0], grid=False, ticks=True),
    ),
    column=alt.Column(
        "Origin:N",
        header=alt.Header(
            titleOrient="bottom",
            labelOrient="bottom",
            labelPadding=0,
        ),
    ),
).properties(width=100).configure_facet(spacing=0).configure_view(stroke=None)
