a-label="anchor" href="#looping-over-different-spatial-extents"></a>
</h3>
<p>Specifying the <code>spafile</code> parameter while setting the
<code>spatmeth</code> parameter to “file” overrides for example the
output extent of the selected Options File. This allows performing the
same preprocessing on different extents using a single Options File. For
example:</p>
<div class="sourceCode" id="cb21"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="co"># Run the tool using t