.. _pylab_examples-multiple_yaxis_with_spines:

pylab_examples example code: multiple_yaxis_with_spines.py
==========================================================



.. plot:: /builddir/build/BUILD/matplotlib-1.0.1/doc/mpl_examples/pylab_examples/multiple_yaxis_with_spines.py

::

    import matplotlib.pyplot as plt
    
    def make_patch_spines_invisible(ax):
        par2.set_frame_on(True)
        par2.patch.set_visible(False)
        for sp in par2.spines.itervalues():
            sp.set_visible(False)
    
    def make_spine_invisible(ax, direction):
        if direction in ["right", "left"]:
            ax.yaxis.set_ticks_position(direction)
            ax.yaxis.set_label_position(direction)
        elif direction in ["top", "bottom"]:
            ax.xaxis.set_ticks_position(direction)
            ax.xaxis.set_label_position(direction)
        else:
            raise ValueError("Unknown Direction : %s" % (direction,))
    
        ax.spines[direction].set_visible(True)
    
    
    if 1:
        fig = plt.figure(1)
    
        host = fig.add_subplot(111)
    
        host.set_xlabel("Distance")
    
        par1 = host.twinx()
        par2 = host.twinx()
    
        par2.spines["right"].set_position(("axes", 1.2))
        make_patch_spines_invisible(par2)
        make_spine_invisible(par2, "right")
    
        plt.subplots_adjust(right=0.75)
    
    
        p1, = host.plot([0, 1, 2], [0, 1, 2], "b-", label="Density")
        p2, = par1.plot([0, 1, 2], [0, 3, 2], "r-", label="Temperature")
        p3, = par2.plot([0, 1, 2], [50, 30, 15], "g-", label="Velocity")
    
        host.set_xlim(0, 2)
        host.set_ylim(0, 2)
        par1.set_ylim(0, 4)
        par2.set_ylim(1, 65)
    
        host.set_xlabel("Distance")
        host.set_ylabel("Density")
        par1.set_ylabel("Temperature")
        par2.set_ylabel("Velocity")
    
        host.yaxis.label.set_color(p1.get_color())
        par1.yaxis.label.set_color(p2.get_color())
        par2.yaxis.label.set_color(p3.get_color())
    
        tkw = dict(size=4, width=1.5)
        host.tick_params(axis='y', colors=p1.get_color(), **tkw)
        par1.tick_params(axis='y', colors=p2.get_color(), **tkw)
        par2.tick_params(axis='y', colors=p3.get_color(), **tkw)
        host.tick_params(axis='x', **tkw)
    
        lines = [p1, p2, p3]
        host.legend(lines, [l.get_label() for l in lines])
        plt.show()
    
    

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