an class="op">(</span><span class="fl">200100</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">X</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/matrix.html" class="external-link">matrix</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/stats/Normal.html" class="external-link">rnorm</a></span><span class="op">(</span><span class="fl">100</span><span class="op">)</span>, nrow <span class="op">=</span> <s