peakPick: generic method peak.pick

In tofsims: Import, process and analysis of Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) imaging data

Description

method peakPick

Usage

peakPick(object, span = 100, ...)

## S4 method for signature 'MassSpectra'
peakPick(object, span = 100, ...)

Arguments

object	object of class MassSpectra
span	numeric parameter for local max/min detection
...	additional args

Details

Method peakPick for MassSpectra class, works as a constructor for PeakList class. The local min/max detection implementation is adapted from the CRAN package 'alsace'.

Value

object of class PeakList with updated slots PeakIDs and peakMzs

object of class PeakList

Examples

library(tofsimsData)
data(tofsimsData)
testSpectra <- reduceSpectrumResolution(object = testSpectra, everyN = 4, mode = 'keep')
testSpectra <- smootherSpline(testSpectra, stepsize = 10, spar = 0.3)
testSpectra <- smootherGolay(testSpectra, p = 3, n = 5)
testSpectra <- peakPick(testSpectra, span = 100)
plot(testSpectra, , mzRange=c(38.5,40.5), type = 'l')

tofsims documentation built on Nov. 8, 2020, 5:10 p.m.