html"><a href="maps.html#sf"><i class="fa fa-check"></i><b>4.2.1</b> Simple features (sf)</a></li>
<li class="chapter" data-level="4.2.2" data-path="maps.html"><a href="maps.html#cartograms"><i class="fa fa-check"></i><b>4.2.2</b> Cartograms</a></li>
</ul></li>
</ul></li>
<li class="chapter" data-level="5" data-path="bars-histograms.html"><a href="bars-histograms.html"><i class="fa fa-check"></i><b>5</b> Bars &amp; histograms</a>
<ul>
<li class="chapter" data-level="5.1" data-path="bars-histograms.html"><a 