les"></a>Examples</h2>
    <pre class="examples"><div class='input'><span class='co'># load necessary packages ----</span>
<span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/library'>library</a></span>(<span class='no'>sf</span>)

<span class='co'># load necessary data ----</span>
<span class='fu'><a href='https://www.rdocumentation.org/packages/utils/topics/data'>data</a></span>(<span class='st'>"census_tracts_sf"</span>)

<span class='co'># plot Chicago 2010 census tracts ----</