nb">len</span><span class="p">(</span><span class="n">arr</span><span class="o">.</span><span class="n">shape</span><span class="p">)</span> <span class="o">==</span> <span class="mi">2</span><span class="p">:</span>
            <span class="n">arr</span> <span class="o">=</span> <span class="n">arr</span><span class="p">[</span><span class="n">np</span><span class="o">.</span><span class="n">newaxis</span><span class="p">]</span>
        <span class="n">height</span><span class="p">,</span> <span class="n"