ps://rdrr.io/r/base/system.html" class="external-link">base::system()</a></code></p></div>
    </div>
    <div class="section level2">
    <h2 id="author">Author<a class="anchor" aria-label="anchor" href="#author"></a></h2>
    <p>Roger S. Bivand, e-mail: <a href="mailto:Roger.Bivand@nhh.no">Roger.Bivand@nhh.no</a></p>
    </div>

    <div class="section level2">
    <h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
    <div class="sourceCode"><pre class="sou