ok at the study watershed example.</p>
<blockquote>
<div><div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">plot</span><span class="p">(</span><span class="n">dem</span><span class="p">,</span>
      <span class="n">main</span><span class="o">=</span><span class="s2">&quot;White Oak Bayou Watershed with Digital Elevation Model (DEM)&quot;</span><span class="p">,</span>
          <span class="n">col</span><span class="o">=</span><span class="n">rev</span><span