Note

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# Choosing the thumbnail figure

This example demonstrates how to choose the figure that is displayed as the thumbnail, if the example generates more than one figure. This is done by specifying the keyword-value pair `sphinx_gallery_thumbnail_number = <fig number>` as a comment somewhere below the docstring in the example file. In this example, we specify that we wish for the second figure to be the thumbnail.

    # Code source: Óscar Nájera
    # License: BSD 3 clause

    import numpy as np
    import matplotlib.pyplot as plt

    def main():
        x = np.linspace(-1, 2, 100)
        y = np.exp(x)

        plt.figure()
        plt.plot(x, y)
        plt.xlabel('$x$')
        plt.ylabel('$\exp(x)$')

        # The next line sets the thumbnail for the second figure in the gallery
        # (plot with negative exponential in orange)
        # sphinx_gallery_thumbnail_number = 2
        plt.figure()
        plt.plot(x, -np.exp(-x), color='orange', linewidth=4)
        plt.xlabel('$x$')
        plt.ylabel('$-\exp(-x)$')
        # To avoid matplotlib text output
        plt.show()

    if __name__ == '__main__':
        main()

Estimated memory usage: 9 MB

Gallery generated by Sphinx-Gallery