:orphan: :html_theme.sidebar_secondary.remove: .. This document is auto-generated by the altair-gallery extension. Do not modify directly. .. _gallery_pie_chart_with_labels: Pie Chart with Labels --------------------- This example shows how to layer text over arc marks (``mark_arc``) to label pie charts. This is adapted from a corresponding Vega-Lite Example: `Pie Chart with Labels `_. .. altair-plot:: :remove-code: import pandas as pd import altair as alt source = pd.DataFrame( {"category": ["a", "b", "c", "d", "e", "f"], "value": [4, 6, 10, 3, 7, 8]} ) base = alt.Chart(source).encode( theta=alt.Theta("value:Q", stack=True), color=alt.Color("category:N", legend=None) ) pie = base.mark_arc(outerRadius=120) text = base.mark_text(radius=140, size=20).encode(text="category:N") pie + text .. tab-set:: .. tab-item:: Method syntax :sync: method .. code:: python import pandas as pd import altair as alt source = pd.DataFrame( {"category": ["a", "b", "c", "d", "e", "f"], "value": [4, 6, 10, 3, 7, 8]} ) base = alt.Chart(source).encode( alt.Theta("value:Q").stack(True), alt.Color("category:N").legend(None) ) pie = base.mark_arc(outerRadius=120) text = base.mark_text(radius=140, size=20).encode(text="category:N") pie + text .. tab-item:: Attribute syntax :sync: attribute .. code:: python import pandas as pd import altair as alt source = pd.DataFrame( {"category": ["a", "b", "c", "d", "e", "f"], "value": [4, 6, 10, 3, 7, 8]} ) base = alt.Chart(source).encode( theta=alt.Theta("value:Q", stack=True), color=alt.Color("category:N", legend=None) ) pie = base.mark_arc(outerRadius=120) text = base.mark_text(radius=140, size=20).encode(text="category:N") pie + text