How to plot a circle in Matplotlib?

To plot a circle in matplotlib, we can take the following steps −

• Create a new figure or activate an existing figure using figure() method.

• Add a subplot arrangement to the current axis.

• Create a true circle at a center using Circle class.

• Add a patch to the current axis.

• Set limits of the x and y axes.

• To display the figure, use show() method.

Example

from matplotlib import pyplot as plt, patches
plt.rcParams["figure.figsize"] = [7.00, 3.50]
plt.rcParams["figure.autolayout"] = True
fig = plt.figure()
ax = fig.add_subplot()
circle1 = patches.Circle((0.2, 0.2), radius=0.5, color='green')
ax.add_patch(circle1)
ax.axis('equal')
plt.show()

Output