.. _api-legend_demo:

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



.. plot:: /home/mdboom/Work/builds/matplotlib/doc/mpl_examples/api/legend_demo.py

::

    import numpy as np
    import matplotlib.pyplot as plt
    
    a = np.arange(0,3,.02)
    b = np.arange(0,3,.02)
    c = np.exp(a)
    d = c[::-1]
    
    fig = plt.figure()
    ax = fig.add_subplot(111)
    ax.plot(a,c,'k--',a,d,'k:',a,c+d,'k')
    leg = ax.legend(('Model length', 'Data length', 'Total message length'),
               'upper center', shadow=True)
    ax.set_ylim([-1,20])
    ax.grid(False)
    ax.set_xlabel('Model complexity --->')
    ax.set_ylabel('Message length --->')
    ax.set_title('Minimum Message Length')
    
    ax.set_yticklabels([])
    ax.set_xticklabels([])
    
    # set some legend properties.  All the code below is optional.  The
    # defaults are usually sensible but if you need more control, this
    # shows you how
    
    # the matplotlib.patches.Rectangle instance surrounding the legend
    frame  = leg.get_frame()
    frame.set_facecolor('0.80')    # set the frame face color to light gray
    
    # matplotlib.text.Text instances
    for t in leg.get_texts():
        t.set_fontsize('small')    # the legend text fontsize
    
    # matplotlib.lines.Line2D instances
    for l in leg.get_lines():
        l.set_linewidth(1.5)  # the legend line width
    plt.show()
    
    
    
    

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