><span class="kw">if</span> <span class="op">(</span><span class="va">run</span><span class="op">)</span> <span class="op">{</span></span></span>
<span class="r-in"><span>  <span class="co"># Assemble the 'r.slope.aspect' command with specified parameters as a string</span></span></span>
<span class="r-in"><span>  <span class="fu">doGRASS</span><span class="op">(</span></span></span>
<span class="r-in"><span>    <span class="st">"r.slope.aspect"</span>,</span></span>
<span class="r-in"><span>    flags <span