.. _pylab_examples-xcorr_demo:

pylab_examples example code: xcorr_demo.py
==========================================



.. plot:: /home/tcaswell/source/p/matplotlib/doc/mpl_examples/pylab_examples/xcorr_demo.py

::

    import matplotlib.pyplot as plt
    import numpy as np
    
    
    np.random.seed(0)
    
    x, y = np.random.randn(2, 100)
    fig = plt.figure()
    ax1 = fig.add_subplot(211)
    ax1.xcorr(x, y, usevlines=True, maxlags=50, normed=True, lw=2)
    ax1.grid(True)
    ax1.axhline(0, color='black', lw=2)
    
    ax2 = fig.add_subplot(212, sharex=ax1)
    ax2.acorr(x, usevlines=True, normed=True, maxlags=50, lw=2)
    ax2.grid(True)
    ax2.axhline(0, color='black', lw=2)
    
    plt.show()
    

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