f="https://rdrr.io/r/utils/data.html" class="external-link">data</a></span><span class="op">(</span><span class="va">spectra</span><span class="op">)</span> <span class="co"># list of MassSpectra class objects</span></span>
<span class="r-in"></span>
<span class="r-in"><span class="co"># Some pre-processing</span></span>
<span class="r-in"></span>
<span class="r-in"><span class="va">spectra</span> <span class="op">&lt;-</span> <span class="fu"><a href="screenSpectra.html">screenSpectra</a></span><span class