s="op">)</span> <span class="op">&lt;-</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="st">"Num"</span>, <span class="st">"Source"</span>, <span class="st">"Proportion"</span><span class="op">)</span></span>
<span></span>
<span><span class="co"># Finally create the new variable that you want to colour by</span></span>
<span><span class="va">df</span><span class="op">$</span><span class="va">new_colour</span> <span class=