How Can I Save Matplotlib Plots as Image Files?

Saving Plots to Image Files in Matplotlib

When creating visualizations using Matplotlib, displaying them in a graphical user interface (GUI) is the default behavior. However, there are situations where saving the plot as an image file is desirable.

Saving Plots to Files

To save the plot to an image file, use Matplotlib's savefig function. By specifying the file extension, the output format can be customized. For example:

import matplotlib.pyplot as plt

plt.plot([1, 2, 3], [1, 4, 9])
plt.savefig('foo.png')  # Saves as a PNG image
plt.savefig('foo.pdf')  # Saves as a PDF file

Controlling Whitespace

Sometimes, there may be undesired whitespace around the saved image. To remove this, specify bbox_inches='tight' as an argument to savefig:

plt.savefig('foo.png', bbox_inches='tight')

Note: If you intend to display the plot after saving it, ensure that plt.show() is called after plt.savefig(). Otherwise, the saved image file will be empty.

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