an class="p">,</span> <span class="n">ampls_map</span> <span class="o">=</span> <span class="n">cube</span><span class="o">.</span><span class="n">fit_cube</span><span class="p">([</span><span class="s1">&#39;OIII4959&#39;</span><span class="p">,</span> <span class="s1">&#39;OIII5007&#39;</span><span class="p">,</span> <span class="s1">&#39;Hbeta&#39;</span><span class="p">],</span> <span class="s1">&#39;gaussian&#39;</span><span class="p">,</span> <span class="p">[</span><span class="mi">1</span><span clas