span><span class="st">"overwrite"</span><span class="op">)</span>, parameters <span class="op">=</span> <span class="va">params</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="op">}</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> GRASS command: r.buffer --overwrite input=schools output=bmap distances=1000,2000,3000,4000,5000,6000,7000,8000,9000,10000,11000,12000,13000,14000,15000 </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1