""" Radial Chart ------------ This radial plot uses both angular and radial extent to convey multiple dimensions of data. This is adapted from a corresponding Vega-Lite Example: `Radial Plot `_. """ # category: circular plots import pandas as pd import altair as alt source = pd.DataFrame({"values": [12, 23, 47, 6, 52, 19]}) base = alt.Chart(source).encode( theta=alt.Theta("values:Q", stack=True), radius=alt.Radius("values", scale=alt.Scale(type="sqrt", zero=True, rangeMin=20)), color="values:N", ) c1 = base.mark_arc(innerRadius=20, stroke="#fff") c2 = base.mark_text(radiusOffset=10).encode(text="values:Q") c1 + c2