MSnExp-class: The 'MSnExp' Class for MS Data And Meta-Data
Description
The MSnExp class encapsulates data and meta-data for mass
spectrometry experiments, as described in the slots
section. Several data files (currently in mzXML) can be loaded
together with the function readMSData.
This class extends the virtual "pSet" class.
In version 1.19.12, the polarity slot had been added to the
"Spectrum" class (previously in
"Spectrum1"). Hence, "MSnExp" objects
created prior to this change will not be valid anymore, since all MS2
spectra will be missing the polarity slot. Object can be
appropriately updated using the updateObject method.
Arguments
concept
MSnExp
Objects from the Class
Objects can be created by calls of the form
new("MSnExp",...). However, it is preferred to use the
readMSData function that will read raw mass
spectrometry data to generate a valid "MSnExp" instance.
Extends
Class "pSet", directly.
Class "VersionedBiobase", by class "pSet", distance 2.
Class "Versioned", by class "pSet", distance 3.
References
Information about the mzXML format as well converters from vendor
specific formats to mzXML:
http://tools.proteomecenter.org/wiki/index.php?title=Formats:mzXML.
See Also
"pSet" and readMSData for loading
mzXML, mzData or mzML files to generate an
instance of MSnExp.