ss="op">}</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> GRASS command: r.slope.aspect --overwrite elevation=elevation slope=slope aspect=aspect </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "r.slope.aspect --overwrite elevation=elevation slope=slope aspect=aspect"</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> attr(,"cmd")</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "r.slope.aspect"</span>
<span class="r-in"><span><span 