Trims 'MSnExp' or 'Spectrum' instances
This method selects a range of MZ values in a single spectrum
(Spectrum instances) or all the spectra of an experiment
(MSnExp instances). The regions to trim are defined by the
range of mz argument, such that MZ values <= min(mz) and
MZ values >= max(mz) are trimmed away.
signature(object = "MSnExp", mz = "numeric", msLevel. =
"numeric") Trims all spectra in MSnExp object according
to mz. If msLevel. is defined, then only spectra of
that level are trimmer.
signature(object = "Spectrum", mz = "numeric",
msLevel. = "numeric")Trims the Spectrum object and
retruns a new trimmed object. msLevel. defines the level
of the spectrum, and if msLevel(object) != msLevel.,
cleaning is ignored. Only relevant when called from
OnDiskMSnExp and is only relevant for developers.
Laurent Gatto <lg390@cam.ac.uk>
removePeaks and clean for other spectra
processing methods.
mz <- 1:100
sp1 <- new("Spectrum2",
mz = mz,
intensity = abs(rnorm(length(mz))))
sp2 <- trimMz(sp1, c(25, 75))
range(mz(sp1))
range(mz(sp2))
data(itraqdata)
itraqdata2 <- filterMz(itraqdata, c(113, 117))
range(mz(itraqdata))
range(mz(itraqdata2))
processingData(itraqdata2)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.