span class="o">.</span><span class="n">plot</span></a><span class="p">(</span><a href="../pyspecdata.html#pyspecdata.nddata.imag" title="pyspecdata.nddata.imag" class="sphx-glr-backref-module-pyspecdata sphx-glr-backref-type-py-property"><span class="n">plotdata</span><span class="o">.</span><span class="n">imag</span></a><span class="p">,</span> <span class="s2">&quot;b&quot;</span><span class="p">,</span> <span class="n">alpha</span><span class="o">=</span><span class="mf">0.5</span><span class="p">,</spa