Python Matplotlib – Pie Chart Example

Matplotlib – Pie Chart

To draw a Pie chart using Matplotlib python library, use matplotlib.pyplot.pie() function.

In this tutorial, we shall go through some Python example programs which demonstrate the usage of pyplot.pie() function to draw a pie chart in Python.

Example

In the following example, we have taken four sectors. The labels and sizes for these sectors are defined by labels and sizes respectively in the program. The size is used to calculate the angle of the sector.

import matplotlib.pyplot as plt
 
# Data to plot
labels = 'Ruby', 'C', 'Python', 'Java'
sizes = [215, 130, 245, 210]
colors = ['#888888', '#db8b46', '#29b5ce', '#e03364']
explode = (0.01, 0.01, 0.1, 0.01)  # explode 1st slice
 
# Plot
plt.pie(sizes, explode=explode, labels=labels, colors=colors)
 
plt.axis('equal')
plt.show()

Output

Summary

In this tutorial of Python Examples, we learned how to draw a Pie Chart using Matplotlib.