2022-05-23 00:16:32 +04:00

24 lines
483 B
Python

"""
Choropleth Map
==============
A choropleth map of unemployment rate per county in the US
"""
# category: maps
import altair as alt
from vega_datasets import data
counties = alt.topo_feature(data.us_10m.url, 'counties')
source = data.unemployment.url
alt.Chart(counties).mark_geoshape().encode(
color='rate:Q'
).transform_lookup(
lookup='id',
from_=alt.LookupData(source, 'id', ['rate'])
).project(
type='albersUsa'
).properties(
width=500,
height=300
)