dl class="simple">
<dt><code class="docutils literal notranslate"><span class="pre">r</span></code>     - Histogram bins #: either</dt><dd><ul>
<li><p>an integer [<code class="docutils literal notranslate"><span class="pre">r</span></code> &gt; 1] representing the number of bins</p></li>
<li><p>a vector array of 3 or more increasing values in range [-1 1] representing the bin edges including the rightmost edge.</p></li>
</ul>
</dd>
</dl>
</li>
<li><p><code class="docutils literal notranslate"><span class="p