precNeutralMass-methods: Returns the precursor's neutral mass.

In RpepXML: R interface to the pepXML standard

Description

This method allows to retrieve and set the neutral mass of the precursor ion used for MSMS peptide identification. The values are set automatically when creating an instance of "MSMSpepXML" with parseMSMSpepXML, and should generally not need to be changed. The method can also be used to retrieve the precursor's neutral masses of all the spectrum queries of an "MSMSpepXML" object.

Methods

signature(object = "SpectrumQuery")

an object of class "SpectrumQuery" is used as parameter and an numeric is returned.

signature(object = "MSMSpepXML")

an object of class "MSMSpepXML" is used as parameter and an numeric or length equal to the number of spectrum queries is returned.

RpepXML documentation built on May 2, 2019, 5:15 p.m.