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<div class="title">Mass spectrometry terms </div> </div>
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<div class="textblock"><p>The following terms for MS-related data are used in this tutorial and the OpenMS class documentation:</p>
<ul>
<li><b>raw data point</b> <br/>
An unprocessed data point as measured by the instrument.</li>
<li><b>peak</b> <br/>
Data point that is the result of some kind of peak detection algorithm. Peaks are often referred to as <em>sticks</em> or <em>centroided</em> <em>data</em> as well.</li>
<li><p class="startli"><b>spectrum / scan</b> <br/>
A mass spectrum containing raw data points (<em>raw</em> <em>spectrum</em>) or peaks (<em>peak</em> <em>spectrum</em>).</p>
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<img src="Terms_Spectrum.png" alt="Terms_Spectrum.png"/>
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Part of a raw spectrum (blue) with three peaks (red)</div></div>
</li>
<li><b>map</b> <br/>
A collection of spectra generated by a HPLC-MS experiment. Depending on what kinds of spectra are contained, we use the terms <em>raw</em> <em>map</em> or <em>peak</em> <em>map</em>. Often a map is also referred to as an <em>experiment</em>.</li>
<li><p class="startli"><b>feature</b> <br/>
The signal caused by a chemical entity detected in an HPLC-MS experiment, typically a peptide.</p>
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<img src="Terms_Map.png" alt="Terms_Map.png"/>
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Peak map with a marked feature (red)</div></div>
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<TD><font color="#c0c0c0">OpenMS / TOPP release 1.11.1</font></TD>
<TD align="right"><font color="#c0c0c0">Documentation generated on Thu Nov 14 2013 11:19:24 using doxygen 1.8.5</font></TD>
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