Nothing
PeakML.Isotope.getMassWindow <- function(mass, nIsotope, ppm, element){
# PRE:
# mass : unlabelled mass of the compound
# nIsotope: number of labelled carbons
# ppm: the ppm window required.
# element: the element whose isotopes we are interest in
# POST:
# Mass window of isotop
# N15 <- 15.0001088982 - N14 <-14.0030740048
fMass <- 0
if (element=="C") fMass <- 1.0033
if (element=="N") fMass <- 0.9970
IsoMass <- fMass * nIsotope
rv <- PeakML.Methods.getPPMWindow(mass + IsoMass, ppm)
rv
}
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