rnal-link">matrix</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="fl">1</span>,<span class="fl">2</span>, <span class="fl">5</span>,<span class="fl">1</span>, <span class="fl">3</span>,<span class="fl">4</span>, <span class="fl">2</span>,<span class="fl">3</span>, <span class="fl">4</span>,<span class="fl">2</span><span class="op">)</span>, ncol <span class="op">=</span> <span class="fl">2</sp