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"""
Repeated Choropleth Map
=======================
Three choropleths representing disjoint data from the same table.
"""
# category: maps
import altair as alt
from vega_datasets import data
states = alt.topo_feature(data.us_10m.url, 'states')
source = data.population_engineers_hurricanes.url
variable_list = ['population', 'engineers', 'hurricanes']
alt.Chart(states).mark_geoshape().encode(
alt.Color(alt.repeat('row'), type='quantitative')
).transform_lookup(
lookup='id',
from_=alt.LookupData(source, 'id', variable_list)
).properties(
width=500,
height=300
).project(
type='albersUsa'
).repeat(
row=variable_list
).resolve_scale(
color='independent'
)
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