.. _pylab_examples-manual_axis:

pylab_examples example code: manual_axis.py
===========================================



.. plot:: /home/tcaswell/source/my_source/matplotlib/doc/mpl_examples/pylab_examples/manual_axis.py

::

    """
    The techniques here are no longer required with the new support for
    spines in matplotlib -- see
    http://matplotlib.org/examples/pylab_examples/spine_placement_demo.html.
    
    This example should be considered deprecated and is left just for demo
    purposes for folks wanting to make a pseudo-axis
    """
    
    import numpy as np
    import matplotlib.pyplot as plt
    import matplotlib.lines as lines
    
    
    def make_xaxis(ax, yloc, offset=0.05, **props):
        xmin, xmax = ax.get_xlim()
        locs = [loc for loc in ax.xaxis.get_majorticklocs()
                if loc >= xmin and loc <= xmax]
        tickline, = ax.plot(locs, [yloc]*len(locs), linestyle='',
                            marker=lines.TICKDOWN, **props)
        axline, = ax.plot([xmin, xmax], [yloc, yloc], **props)
        tickline.set_clip_on(False)
        axline.set_clip_on(False)
        for loc in locs:
            ax.text(loc, yloc - offset, '%1.1f' % loc,
                    horizontalalignment='center',
                    verticalalignment='top')
    
    
    def make_yaxis(ax, xloc=0, offset=0.05, **props):
        ymin, ymax = ax.get_ylim()
        locs = [loc for loc in ax.yaxis.get_majorticklocs()
                if loc >= ymin and loc <= ymax]
        tickline, = ax.plot([xloc]*len(locs), locs, linestyle='',
                            marker=lines.TICKLEFT, **props)
        axline, = ax.plot([xloc, xloc], [ymin, ymax], **props)
        tickline.set_clip_on(False)
        axline.set_clip_on(False)
    
        for loc in locs:
            ax.text(xloc - offset, loc, '%1.1f' % loc,
                    verticalalignment='center',
                    horizontalalignment='right')
    
    
    props = dict(color='black', linewidth=2, markeredgewidth=2)
    x = np.arange(200.)
    y = np.sin(2*np.pi*x/200.) + np.random.rand(200) - 0.5
    fig = plt.figure(facecolor='white')
    ax = fig.add_subplot(111, frame_on=False)
    ax.axison = False
    ax.plot(x, y, 'd', markersize=8, markerfacecolor='blue')
    ax.set_xlim(0, 200)
    ax.set_ylim(-1.5, 1.5)
    make_xaxis(ax, 0, offset=0.1, **props)
    make_yaxis(ax, 0, offset=5, **props)
    
    plt.show()
    

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