'>this is a good guide</a> to installing the required libraries.</p>
    
    <h2 class="hasAnchor" id="source"><a class="anchor" href="#source"></a>Source</h2>

    <p>This <code>sf</code> object comes from the City of Chicago Data Portal, <a href='https://data.cityofchicago.org/Facilities-Geographic-Boundaries/Boundaries-Census-Tracts-2010/5jrd-6zik'>
Boundaries - Census Tracts - 2010</a>. The file was last updated on July 11, 2018.</p>
    
    <h2 class="hasAnchor" id="references"><a class="anchor" href