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    <p>In order to hide the right and top spines of a subplot, you need to both set the colour of the relevant spines to <code>'none'</code>, as well as set the tick position to <code>'left'</code> for the xtick, and <code>'bottom'</code> for the ytick (in order to hide the tick marks as well as the spines).</p> <p>Unfortunately, none of these are currently accessible via <code>matplotlibrc</code>. The parameters specified in <code>matplotlibrc</code> are validated, and then stored in a dict called <code>rcParams</code>. It is then up to the individual modules to check for a key in this dict whose value will act as their default. If they don't check it for one of their options, that option is not alterable via the <code>rc</code> file. </p> <p>Due to the nature of the <code>rc</code> system, and the way that spines are written, altering the code to allow for this would not be straightforward:</p> <p>Spines currently obtain their colour through the same <code>rc</code> parameter used to define axis colours; you cannot set it to <code>'none'</code> without hiding all of your axis drawing. They are also agnostic towards whether they are <code>top</code>, <code>right</code>, <code>left</code>, or <code>bottom</code> &mdash; these are really just four separate spines stored in a dict. The individual spine objects do not know what side of the plot they compose, so you cannot just add new <code>rc</code> params and assign the proper one during spine initialization.</p> <pre><code>self.set_edgecolor( rcParams['axes.edgecolor'] ) </code></pre> <p>(<em>./matplotlib/lib/matplotlib/spines.py</em>, __init__(), <em>line 54</em>)</p> <p>If you have a large amount of existing code, such that adding the axis parameters manually to each one would be too burdensome, you could alternately use a helper function to iterate through all of the Axis objects and set the values for you.</p> <p>Here's an example:</p> <pre><code>import matplotlib import matplotlib.pyplot as plt import numpy as np from matplotlib.pyplot import show # Set up a default, sample figure. fig = plt.figure() x = np.linspace(-np.pi,np.pi,100) y = 2*np.sin(x) ax = fig.add_subplot(1,2,2) ax.plot(x,y) ax.set_title('Normal Spines') def hide_spines(): """Hides the top and rightmost axis spines from view for all active figures and their respective axes.""" # Retrieve a list of all current figures. figures = [x for x in matplotlib._pylab_helpers.Gcf.get_all_fig_managers()] for figure in figures: # Get all Axis instances related to the figure. for ax in figure.canvas.figure.get_axes(): # Disable spines. ax.spines['right'].set_color('none') ax.spines['top'].set_color('none') # Disable ticks. ax.xaxis.set_ticks_position('bottom') ax.yaxis.set_ticks_position('left') hide_spines() show() </code></pre> <p>Just call <code>hide_spines()</code> before <code>show()</code>, and it will hide them in all of the figures that <code>show()</code> displays. I cannot think of a simpler way to alter a large number of figures, outside of spending the time to patch <code>matplotlib</code> and add in <code>rc</code> support for the needed options. </p>
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