"""
Faceted Scatter Plot with Linked Brushing
-----------------------------------------
This is an example of using an interval selection to control the color of
points across multiple facets.
"""

import altair as alt
from vega_datasets import data

cars = data.cars()

brush = alt.selection(type='interval', resolve='global')

base = alt.Chart(cars).mark_point().encode(
    y='Miles_per_Gallon',
    color=brush.condition('Origin',
                          alt.ColorValue('gray'))
).properties(
    selection=brush,
    width=300,
    height=300
)

chart = base.encode(x='Horsepower') | base.encode(x='Acceleration')

Add scatter linked-brush selection example
Add scatter linked-brush selection example
