grabSpectraPremz: Extract the precursor mass from the spectra of an mzML nodeset
Description
Extract the precursor mass from the spectra of an mzML nodeset
Usage
grabSpectraPremz(xml_nodes)
Value
A numeric vector of precursor masses, one for each scan
Arguments
- xml_nodes
An xml_nodeset object corresponding to the spectra collected
by the mass spectrometer, usually produced by applying `xml_find_all` to an
MS1 or MS2 nodeset.