How to surpress some autopct values plotted on a pie plot

Question

I can create a piechart where each wedges is having its size printed like this:

df = pd.DataFrame({'mass': [0.330, 4.87 , 5.97],
                   'radius': [2439.7, 6051.8, 6378.1]},
                  index=['Mercury', 'Venus', 'Earth'])
plot = df.plot.pie(y='mass', figsize=(5, 5), autopct= '%.2f')

How can I make it print the values only for a subset (say don't print Mercury)?

Trenton McKinney · Accepted Answer · 2021-11-08T12:26:54.893

2

Use a lambda function to conditionally place values with autopct. As per matplotlib.pyplot.pie, which is used by pandas.DataFrame.plot.pie, autopct can be None, a str or a callable function.
See this answer for additional customization options.

df = pd.DataFrame({'mass': [0.330, 4.87 , 5.97],
                   'radius': [2439.7, 6051.8, 6378.1]},
                  index=['Mercury', 'Venus', 'Earth'])

autopct = lambda v: f'{v:.2f}%' if v > 10 else None

plot = df.plot.pie(y='mass', figsize=(5, 5), autopct=autopct)

edited Nov 08 '21 at 12:26

answered Nov 08 '21 at 12:10

Trenton McKinney

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ah, that's a cleaner way of doing it than my answer :) – tmdavison Nov 08 '21 at 12:20

tmdavison · Answer 2 · 2021-11-08T12:15:10.440

One option would be to remove the text (or set it to not visible) after creating the plot. The main issue now is finding which is the correct text to modify. For example:

import pandas as pd

df = pd.DataFrame({'mass': [0.330, 4.87 , 5.97],
                   'radius': [2439.7, 6051.8, 6378.1]},
                  index=['Mercury', 'Venus', 'Earth'])
plot = df.plot.pie(y='mass', figsize=(5, 5), autopct= '%.2f')

print(plot.texts)

would yield

[Text(1.09526552098778, 0.10194821496900702, 'Mercury'),
 Text(0.5974175569024254, 0.05560811725582201, '2.95'),
 Text(0.01701519685165565, 1.0998683935253797, 'Venus'),
 Text(0.009281016464539445, 0.5999282146502071, '43.60'),
 Text(-0.11887821664562105, -1.0935574834489301, 'Earth'),
 Text(-0.0648426636248842, -0.5964859000630527, '53.45')]

So you can see, it is the second Text item we want to turn off. A simple way to do this is:

plot.texts[1].set_visible(False)

or alternatively

plot.texts[1].remove()

Obviously, then the issue in generalising this is to know which texts to remove in advance. As you cans see above the order in which texts are added to the axes are the index name (planet name), then the autopct label for that planet, then repeat for the next planet. So if you know you want to remove the autopct label for planet i, you could use something like plot.texts[2 * i + 1].remove().

A helper function to do this for a given planet label would look something like this:

def remove_text(label):
    ind = df.index.get_loc(label) * 2 + 1
    plot.texts[ind].remove()

remove_text('Mercury')

How to surpress some autopct values plotted on a pie plot

2 Answers2