llel computation.
Default to 1 (sequential mode).</p></dd>


<dt id="arg-clustertype">clustertype<a class="anchor" aria-label="anchor" href="#arg-clustertype"></a></dt>
<dd><p>optional character indicating the type of cluster for parallel computation.</p></dd>

</dl></div>
    <div class="section level2">
    <h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
    <p>The list returned is:</p>
<dl><dt>ns</dt>
<dd><p>number of grouping units in the dataset</p></dd>

<dt>ng</dt>
<