tml">library</a></span><span class="op">(</span><span class="va"><a href="https://github.com/rstudio/htmltools">htmltools</a></span><span class="op">)</span>
<span class="kw"><a href="https://rdrr.io/r/base/library.html">library</a></span><span class="op">(</span><span class="va"><a href="https://github.com/edzer/sp/">sp</a></span><span class="op">)</span>

<span class="va">example_data</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/data.frame.html">data.frame</a></spa