.. _pylab_examples-patheffect_demo:

pylab_examples example code: patheffect_demo.py
===============================================



.. plot:: /home/mandrake/rpm/BUILD/matplotlib-1.1.1/doc/mpl_examples/pylab_examples/patheffect_demo.py

::

    import matplotlib.pyplot as plt
    import matplotlib.patheffects as PathEffects
    import numpy as np
    
    if 1:
        plt.figure(1, figsize=(8,3))
        ax1 = plt.subplot(131)
        ax1.imshow([[1,2],[2,3]])
        txt = ax1.annotate("test", (1., 1.), (0., 0),
                           arrowprops=dict(arrowstyle="->",
                                           connectionstyle="angle3", lw=2),
                           size=20, ha="center")
    
        txt.set_path_effects([PathEffects.withStroke(linewidth=3,
                                                     foreground="w")])
        txt.arrow_patch.set_path_effects([PathEffects.Stroke(linewidth=5,
                                                             foreground="w"),
                                          PathEffects.Normal()])
    
        ax2 = plt.subplot(132)
        arr = np.arange(25).reshape((5,5))
        ax2.imshow(arr)
        cntr = ax2.contour(arr, colors="k")
        clbls = ax2.clabel(cntr, fmt="%2.0f", use_clabeltext=True)
        plt.setp(clbls,
                 path_effects=[PathEffects.withStroke(linewidth=3,
                                                      foreground="w")])
    
    
        # shadow as a path effect
        ax3 = plt.subplot(133)
        p1, = ax3.plot([0, 1], [0, 1])
        leg = ax3.legend([p1], ["Line 1"], fancybox=True, loc=2)
        leg.legendPatch.set_path_effects([PathEffects.withSimplePatchShadow()])
    
        plt.show()
    
    

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