CalculateTransitionSum: Compute the sum of transition peaks in a peak group of class...

In shadieshghi/TargetedMSQC: TargetedMSQC for Automated Quality Assessment of Targeted Mass Spectrometry Data

Description

The function takes a peak group of class peakObj as input and calculates the sum of the peak intensities of transition peaks with identical labels. For example, all the endogenous transition peaks with labels of "light" will be added up to create the "sum.0.light" peak and all the spiked-in standard transition peaks with labels of "heavy" will be added up to create the "sum.0.heavy" peak.

Usage

CalculateTransitionSum(peak, endogenous.label = "light",
  standard.label = "heavy", ...)

Arguments

peak	A peak group of class peakObj
endogenous.label	Label of the endogenous analyte: default is "light"
standard.label	Label of the spiked-in isotopically labeled analyte: default is "heavy"

Value

A peak group of class peakObj, which contains two peaks: sum of light transition peaks and sum of heavy transition peaks in the input peak group

Examples

peak <- data.CSF$data$PeakGroup[[1]]
peak.sum <- CalculateTransitionSum(peak)
PlotChromPeak(peak.sum)

shadieshghi/TargetedMSQC documentation built on May 13, 2019, 12:20 p.m.