estimateNoise-methods: Noise Estimation for 'Spectrum' instances
Description
This method performs a noise estimation on individual spectra
(Spectrum instances).
There are currently two different noise estimators, the
Median Absolute Deviation (method = "MAD") and
Friedman's Super Smoother (method = "SuperSmoother"),
as implemented in the MALDIquant::detectPeaks and
MALDIquant::estimateNoise functions respectively.
Estiamtes the noise in a non-centroided spectrum (Spectrum
instance).
method could be "MAD" or "SuperSmoother".
The arguments ... are passed to the noise estimator functions
implemented in MALDIquant::estimateNoise.
Currenlty only the method = "SuperSmoother" accepts additional
arguments, e.g. span. Please see supsmu for
details.
This method returns a two-column matrix with the m/z and intensity values
in the first and the second column.
S. Gibb and K. Strimmer. 2012.
MALDIquant: a versatile R package for the analysis of mass spectrometry data.
Bioinformatics 28: 2270-2271.
http://strimmerlab.org/software/maldiquant/