<span class="p">,</span> <span class="s">&#39;patch&#39;</span><span class="p">)</span> <span class="p">;</span>
</pre></div>


<p>In this case each column of <code/>descrs</code> is a stacked patch.
To visualize the first 100 patches, one can use for example:</p>

<div class="highlight"><pre><span class="n">w</span> <span class="p">=</span> <span class="nb">sqrt</span><span class="p">(</span><span class="nb">size</span><span class="p">(</span><span class="n">patches</span><span class="p">,</span><span clas