ss="va"><a href="https://ggplot2.tidyverse.org" class="external-link">ggplot2</a></span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># generate a set of curves</span></span></span>
<span class="r-in"><span><span class="va">k</span> <span class="op">=</span> <span class="fl">11</span> <span class="co"># number of curves</span></span></span>
<span class="r-in"><span><span class="va">n</span> <span class="op">=</span> <span class="fl"