://rdrr.io/r/grDevices/hcl.html" class="external-link">hcl</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/seq.html" class="external-link">seq</a></span><span class="op">(</span><span class="fl">0</span>, <span class="fl">360</span>, length.out <span class="op">=</span> <span class="fl">10</span><span class="op">)</span>, <span class="fl">80</span>, <span class="fl">70</span><span class="op">)</span>, nrow <span class="op">=</span> <span class="fl">1</span><span class="op