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"""
Pyramid Pie Chart
-----------------
Altair reproduction of http://robslink.com/SAS/democd91/pyramid_pie.htm
"""
# category: case studies
import altair as alt
import pandas as pd
category = ['Sky', 'Shady side of a pyramid', 'Sunny side of a pyramid']
color = ["#416D9D", "#674028", "#DEAC58"]
df = pd.DataFrame({'category': category, 'value': [75, 10, 15]})
alt.Chart(df).mark_arc(outerRadius=80).encode(
alt.Theta('value:Q', scale=alt.Scale(range=[2.356, 8.639])),
alt.Color('category:N',
scale=alt.Scale(domain=category, range=color),
legend=alt.Legend(title=None, orient='none', legendX=160, legendY=50)),
order='value:Q'
).properties(width=150, height=150).configure_view(strokeOpacity=0)
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