an><span class="n">shape</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="mi">2</span><span class="p">:</span>
            <span class="n">datab</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">vstack</span><span class="p">((</span><span class="n">datab</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span><span class="n">np</span><span class="o">.</span><span class