-in"><span><span class="va">ydata</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="va">ydata</span>,<span class="fu"><a href="https://rdrr.io/r/base/length.html" class="external-link">length</a></span><span class="op">(</span><span class="va">ydata</span><span class="op">)</span>,<span class="fl">1</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="