n"></span>
<span class="r-in"><span class="co"># Summary of spectra features (results for positions 10 to 20)</span></span>
<span class="r-in"></span>
<span class="r-in"><span class="fu">summarySpectra</span><span class="op">(</span><span class="va">spectra</span><span class="op">[</span><span class="fl">10</span><span class="op">:</span><span class="fl">20</span><span class="op">]</span><span class="op">)</span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>           ID No.MZ  Min.MZ   Max.