removeBaseline-methods | R Documentation |
This method removes the baseline of mass spectrometry data
(represented by a MassSpectrum
object).
The intensity of the mass spectrometry data would be reduced by
baseline
.
## S4 method for signature 'MassSpectrum'
removeBaseline(object,
method=c("SNIP", "TopHat", "ConvexHull", "median"),
...)
## S4 method for signature 'list'
removeBaseline(object, ...)
object |
|
method |
used baseline estimation method, one of
|
... |
arguments to be passed to
|
Returns a modified MassSpectrum
object with reduced
intensities.
Sebastian Gibb mail@sebastiangibb.de
MassSpectrum
,
estimateBaseline,MassSpectrum-method
demo("baseline")
Website: https://strimmerlab.github.io/software/maldiquant/
## load package
library("MALDIquant")
## load example data
data("fiedler2009subset", package="MALDIquant")
## choose only the first mass spectrum
s <- fiedler2009subset[[1]]
## plot spectrum
plot(s)
## subtract baseline
b <- removeBaseline(s, method="SNIP")
## draw modified spectrum on the plot
lines(b, col="blue")
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