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"""
World Map
---------
This example shows how to create a world map using data generators for
different background layers.
"""
# category: maps
import altair as alt
from vega_datasets import data
# Data generators for the background
sphere = alt.sphere()
graticule = alt.graticule()
# Source of land data
source = alt.topo_feature(data.world_110m.url, 'countries')
# Layering and configuring the components
alt.layer(
alt.Chart(sphere).mark_geoshape(fill='lightblue'),
alt.Chart(graticule).mark_geoshape(stroke='white', strokeWidth=0.5),
alt.Chart(source).mark_geoshape(fill='ForestGreen', stroke='black')
).project(
'naturalEarth1'
).properties(width=600, height=400).configure_view(stroke=None)
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