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"""
Anscombe's Quartet
------------------
This example shows how to use the column channel to make a trellis plot. Anscombe's Quartet is a famous dataset constructed by Francis Anscombe. Common summary statistics are identical for each subset of the data, despite the subsets having vastly different characteristics.
"""
# category: case studies
import altair as alt
from vega_datasets import data
source = data.anscombe()
alt.Chart(source).mark_circle().encode(
alt.X('X', scale=alt.Scale(zero=False)),
alt.Y('Y', scale=alt.Scale(zero=False)),
alt.Facet('Series', columns=2),
).properties(
width=180,
height=180,
)
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