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"""
Violin Plot
-----------
This example shows how to make a Violin Plot using Altair's density transform.
"""
# category: other charts
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
)
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