an class="op">)</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/colnames.html" class="external-link">colnames</a></span><span class="op">(</span><span class="va">X</span><span class="op">)</span></span></code></pre></div>
<div class="section level3">
<h3 id="relationship-to-qr-factorization">Relationship to QR factorization<a class="anchor" aria-label="anchor" href="#relationship-to-qr-factorization"></a>
</h3>
<p>The QR method uses essentially the same process, factori