/windows/Rtools/" class="external-link uri">https://cran.r-project.org/bin/windows/Rtools/</a> and find the latest version.</p></li>
<li><p>Go to “Control Panel -&gt; System -&gt;”Advanced” (tab) -&gt; “Environment Variables” -&gt; Highlight “Path” -&gt; “Edit” -&gt; Add to the character string in “Variable Value” the path to your Rtools folder **C:;C:*.</p></li>
</ol>
</div>
<div class="section level2">
<h2 id="mac--unix">Mac / Unix<a class="anchor" aria-label="anchor" href="#mac--uni