.. _style_sheets-plot_grayscale:

style_sheets example code: plot_grayscale.py
============================================



.. plot:: /home/tcaswell/source/p/matplotlib/doc/mpl_examples/style_sheets/plot_grayscale.py

::

    """
    =====================
    Grayscale style sheet
    =====================
    
    This example demonstrates the "grayscale" style sheet, which changes all colors
    that are defined as rc parameters to grayscale. Note, however, that not all
    plot elements default to colors defined by an rc parameter.
    
    """
    import numpy as np
    import matplotlib.pyplot as plt
    
    
    def color_cycle_example(ax):
        L = 6
        x = np.linspace(0, L)
        ncolors = len(plt.rcParams['axes.prop_cycle'])
        shift = np.linspace(0, L, ncolors, endpoint=False)
        for s in shift:
            ax.plot(x, np.sin(x + s), 'o-')
    
    
    def image_and_patch_example(ax):
        ax.imshow(np.random.random(size=(20, 20)), interpolation='none')
        c = plt.Circle((5, 5), radius=5, label='patch')
        ax.add_patch(c)
    
    
    plt.style.use('grayscale')
    
    fig, (ax1, ax2) = plt.subplots(ncols=2)
    fig.suptitle("'grayscale' style sheet")
    
    color_cycle_example(ax1)
    image_and_patch_example(ax2)
    
    plt.show()
    

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