">plot</span><span class="p">(</span><span class="n">title</span><span class="o">=</span><span class="s1">&#39;Preprocessed Raman spectra&#39;</span><span class="p">)</span>
</pre></div>
</div>
<img src="../../_images/sphx_glr_plot_ii_custom_method_003.png" srcset="../../_images/sphx_glr_plot_ii_custom_method_003.png" alt="Preprocessed Raman spectra" class = "sphx-glr-single-img"/><div class="sphx-glr-script-out highlight-none notranslate"><div class="highlight"><pre><span></span>&lt;Axes: title={&#39;cente