How to have a function return a figure in Python (using Matplotlib)?

To have a function return a figure in Python (using Matplotlib), we can take the following steps −

Set the figure size and adjust the padding between and around the subplots.
Create x and y data points using numpy.
Make a function plot(x, y) that creates a new figure or activate an existing figure using figure() method.
Plot the x and y data points using plot() method; return fig instance.
Call plot(x, y) method and store the figure instance in a variable, f.
To display the figure, use show() method.

Example

import numpy as np
from matplotlib import pyplot as plt

plt.rcParams["figure.figsize"] = [7.50, 3.50]
plt.rcParams["figure.autolayout"] = True

def plot(x, y):
   fig = plt.figure()
   plt.plot(x, y)
   return fig

x = np.linspace(-10, 10, 100)
y = np.sin(x)

f = plot(x, y)

plt.show()

Output

Rishikesh Kumar Rishi

Published on 10-Aug-2021 07:33:37

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