# Basic donut plot

This post aims to describe how to plot a basic donut chart using matplotlib library.

The trick to plot a donut chart using matplotlib is to draw a pie plot and add a white circle in the middle of it. In order to draw a circle, you can use the `Circle()` function of matplotlib. The parameters passed to the function in the example below are:

• `(x,y)` : center point of the circle
• `radius` : radius of the circle
• `color` : color of the circle

In the example, the `add_artist()` function is used to add the white circle on the axes of the pie chart. In order to get the current axes instance on the current figure, the `gca()` function is used and to get the current figure, the `gcf()` function is used.

``````# library
import matplotlib.pyplot as plt

# create data
size_of_groups=[12,11,3,30]

# Create a pie plot
plt.pie(size_of_groups)
#plt.show()

# add a white circle at the center
my_circle=plt.Circle( (0,0), 0.7, color='white')
p=plt.gcf()
p.gca().add_artist(my_circle)

# show the graph
plt.show()``````

Treemap

Venn Diagram

Donut

Pie Chart

Dendrogram

Circular Packing

## Contact & Edit

👋 This document is a work by Yan Holtz. Any feedback is highly encouraged. You can fill an issue on Github, drop me a message onTwitter, or send an email pasting `yan.holtz.data` with `gmail.com`.

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