

.. _sphx_glr_gallery_animation_basic_example_writer_sgskip.py:


===================
Saving an animation
===================

This example showcases the same animations as `basic_example.py`, but instead
of displaying the animation to the user, it writes to files using a
MovieWriter instance.



.. code-block:: python


    import numpy as np
    import matplotlib
    matplotlib.use("Agg")
    import matplotlib.pyplot as plt
    import matplotlib.animation as animation


    def update_line(num, data, line):
        line.set_data(data[..., :num])
        return line,

    # Fixing random state for reproducibility
    np.random.seed(19680801)


    # Set up formatting for the movie files
    Writer = animation.writers['ffmpeg']
    writer = Writer(fps=15, metadata=dict(artist='Me'), bitrate=1800)


    fig1 = plt.figure()

    data = np.random.rand(2, 25)
    l, = plt.plot([], [], 'r-')
    plt.xlim(0, 1)
    plt.ylim(0, 1)
    plt.xlabel('x')
    plt.title('test')
    line_ani = animation.FuncAnimation(fig1, update_line, 25, fargs=(data, l),
                                       interval=50, blit=True)
    line_ani.save('lines.mp4', writer=writer)

    fig2 = plt.figure()

    x = np.arange(-9, 10)
    y = np.arange(-9, 10).reshape(-1, 1)
    base = np.hypot(x, y)
    ims = []
    for add in np.arange(15):
        ims.append((plt.pcolor(x, y, base + add, norm=plt.Normalize(0, 30)),))

    im_ani = animation.ArtistAnimation(fig2, ims, interval=50, repeat_delay=3000,
                                       blit=True)
    im_ani.save('im.mp4', writer=writer)

**Total running time of the script:** ( 0 minutes  0.000 seconds)



.. container:: sphx-glr-footer


  .. container:: sphx-glr-download

     :download:`Download Python source code: basic_example_writer_sgskip.py <basic_example_writer_sgskip.py>`



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: basic_example_writer_sgskip.ipynb <basic_example_writer_sgskip.ipynb>`

.. rst-class:: sphx-glr-signature

    `Generated by Sphinx-Gallery <https://sphinx-gallery.readthedocs.io>`_
