n class="n">alpha</span><span class="o">=</span><span class="mf">0.5</span>
                <span class="p">)</span>
                <span class="n">ax</span><span class="o">.</span><span class="n">add_patch</span><span class="p">(</span><span class="n">polygon</span><span class="p">)</span>

    <span class="n">output_name</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">basename</span><span class="p">(</span