changePeakWidth: method changePeakWidth

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

Description

method changePeakWidth

Usage

changePeakWidth(object, selectMz, lowerWidth, upperWidth, ...)

## S4 method for signature 'PeakList,missing,missing,missing'
changePeakWidth(object, selectMz, lowerWidth, upperWidth, ...)

## S4 method for signature 'PeakList,numeric,numeric,numeric'
changePeakWidth(object, selectMz, lowerWidth, upperWidth, ...)

Arguments

object	PeakList object
selectMz	numeric change width of peak closest to selectMz
lowerWidth	numeric lower width value in mass units
upperWidth	numeric upper width value in mass units
...	additional args

Details

method changePeakWidth is used to modify the peak width of an individual peak it should be called with the argument mzRange to zoom into the region of interest for choosing the peak. Then two further clicks for choosing the (new) lower and upper peak widths.

Value

PeakList object with upated peak widths

Examples

library(tofsimsData)
data(tofsimsData)
testPeakList<-PeakList(analysisName = analysisName(testSpectra),
instrument = instrument(testSpectra),
nz = nz(testSpectra),
calibration = calibration(testSpectra),
calibPoints = calibPoints(testSpectra),
mz = mz(testSpectra),
peakIDs = NULL,
peakMzs = NULL)
par(mfcol=c(1,2))
testPeakList<-addPeaks(testPeakList, mzs=26:31, width=0.4)
peakWidths(testPeakList)
testPeakList<-changePeakWidth(testPeakList, selectMz = 27, lowerWidth = 0.2, upperWidth = 0.3)
peakWidths(testPeakList)

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