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Drawing frequency histogram of Pandas DataFrame column

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Miscellaneous Cookbook
schedule Mar 10, 2022
Last updated
local_offer PythonPandas
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tocTable of Contents
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Consider the following DataFrame:

import pandas as pd

df = pd.DataFrame({
'class':['A','A','B','A','B','C'],
'name':['alex','bob','cathy','doge','eric','fred']})
df
class name
0 A alex
1 A bob
2 B icathy
3 A doge
4 B eric
5 C fred

Using matplotlib

To draw a frequency histogram of the class column:

import matplotlib.pyplot as plt

plt.hist(df['class'])
plt.ylabel('Frequency count')
plt.xlabel('Data');
plt.title('My histogram')
plt.show()

This gives you the following plot:

Using seaborn

The other alternative is to use the seaborn library:

import seaborn as sns
sns.countplot(x=df['class'])

We get the following:

robocat
Published by Isshin Inada
Edited by 0 others
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