</p>
</div>
<div class="section level2">
<h2 id="types-of-issue">Types of issue<a class="anchor" aria-label="anchor" href="#types-of-issue"></a>
</h2>
<div class="section level3">
<h3 id="missing-data">Missing data<a class="anchor" aria-label="anchor" href="#missing-data"></a>
</h3>
<p>The most obvious requirement for most of the <code>Rage</code>
methods is that missing (<code>NA</code>) values in matrices prevent
calculations using those matrices. Sometimes these <code>NA</code>
values are in one of the s