.. _animation-simple_anim:

animation example code: simple_anim.py
======================================

[`source code <simple_anim.py>`_]

::

    """
    A simple example of an animated plot
    """
    import numpy as np
    import matplotlib.pyplot as plt
    import matplotlib.animation as animation
    
    fig = plt.figure()
    ax = fig.add_subplot(111)
    
    x = np.arange(0, 2*np.pi, 0.01)        # x-array
    line, = ax.plot(x, np.sin(x))
    
    def animate(i):
        line.set_ydata(np.sin(x+i/10.0))  # update the data
        return line,
    
    #Init only required for blitting to give a clean slate.
    def init():
        line.set_ydata(np.ma.array(x, mask=True))
        return line,
    
    ani = animation.FuncAnimation(fig, animate, np.arange(1, 200), init_func=init,
        interval=25, blit=True)
    plt.show()
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)