h2>

    <p>The following is <code>sf</code> installation advice from <a href='https://nycgeo.mattherman.info/'>Matt Herman</a>:</p>
    <p>Depending on your operating system and available libraries, <code>sf</code> can be tricky to install the first time. The <a href='https://r-spatial.github.io/sf/index.html#installing'><code>sf</code> website</a> is a good place to start if you're having trouble. If you're using macOS, <a href='https://medium.com/@jinwujour/mapping-with-r-on-mac-installation-8c8ef997c6c2