.. _api-legend_demo:

api example code: legend_demo.py
================================



.. plot:: /home/tcaswell/source/p/matplotlib/doc/mpl_examples/api/legend_demo.py

::

    """
    ===============================
    Legend using pre-defined labels
    ===============================
    
    Notice how the legend labels are defined with the plots!
    """
    
    
    import numpy as np
    import matplotlib.pyplot as plt
    
    # Make some fake data.
    a = b = np.arange(0, 3, .02)
    c = np.exp(a)
    d = c[::-1]
    
    # Create plots with pre-defined labels.
    fig, ax = plt.subplots()
    ax.plot(a, c, 'k--', label='Model length')
    ax.plot(a, d, 'k:', label='Data length')
    ax.plot(a, c + d, 'k', label='Total message length')
    
    legend = ax.legend(loc='upper center', shadow=True, fontsize='x-large')
    
    # Put a nicer background color on the legend.
    legend.get_frame().set_facecolor('#00FFCC')
    
    plt.show()
    

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