Connecting Matplotlib Figure Events

Introduction

Matplotlib is a popular data visualization library in Python. In this tutorial, you will learn how to connect events that occur when a figure closes. This is useful when you want to perform an action after closing a figure.

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Skills Graph

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Import Matplotlib and Define the on_close Function

In this step, we will import Matplotlib and define the on_close function that will be called when the figure is closed. The function will simply print a message to the console.

import matplotlib.pyplot as plt

def on_close(event):
    print('Closed Figure!')

Create a Figure and Connect the Close Event

In this step, we will create a figure and connect the close event to the on_close function defined in Step 1. This is done using the mpl_connect method of the figure's canvas.

fig = plt.figure()
fig.canvas.mpl_connect('close_event', on_close)

Add Text to the Figure

In this step, we will add text to the figure to prompt the user to close it. This is done using the text method of Matplotlib.

plt.text(0.35, 0.5, 'Close Me!', dict(size=30))

Show the Figure

In this step, we will show the figure using the show method of Matplotlib.

plt.show()

Summary

In this tutorial, you learned how to connect events that occur when a figure closes using Matplotlib. You can use this to perform an action after closing a figure.