Matplotlib Legend Tutorial Matplotlib Legend LnfGvdCqGYs

Web Reference: A string starting with an underscore is the default label for all artists, so calling Axes.legend without any arguments and without setting the labels manually will result in a UserWarning and an empty legend being drawn. Dec 3, 2025 · In the Matplotlib library, there’s a function called legend () which is used to place a legend on the axes. In this article, we will learn about the Matplotlib Legends. In this post, we'll go through how to add and customize legends in Matplotlib. Adding a legend to an existing plot in Matplotlib is a simple command, but can have some gotchas. If using plt, you can simply add plt.legend(), as seen below, to add a legend to the existing figure.

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