t you need</span></span></code></pre></div>
</div>
</div>
<div id="spatial-filtering-and-processing" class="section level1">
<h1>Spatial Filtering and Processing</h1>
<div id="smoothing-operations" class="section level2">
<h2>Smoothing Operations</h2>
<div class="sourceCode" id="cb9"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb9-1"><a href="#cb9-1" tabindex="-1"></a><span class="co"># Gaussian smoothing with single sigma value (pass mask explicitly)</span></span>
<span id="cb9-2"><a hre