p">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/reshape.html" class="external-link">reshape</a></span><span class="op">(</span><span class="va">df_plot</span>, varying <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/names.html" class="external-link">names</a></span><span class="op">(</span><span class="va">df_plot</span><span class="op">)</span>, direction <span class="op">=</span> <span class="st">"long"</span><span class="op">)</span></span>
<span><span class="