Mass spectrum processing by wavelet-based algorithms


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Documentation for package ‘MassSpecWavelet’ version 1.8.0

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MassSpecWavelet-package Peak detection of mass spectrum by Wavelet transform based methods
cwt Continuous Wavelet Transform (CWT)
exampleMS An example mass spectrum
extendLength Extend the length of a signal or matrix
extendNBase Extend the row number of a matrix as the exponential of base N
getLocalMaximumCWT Identify the local maximum of each column in 2-D CWT coefficients matrix
getRidge Identify ridges based on the local maximum matrix
getRidgeLength Estimate the length of the ridge
getRidgeValue Get the CWT coefficient values corresponding to the peak ridge
identifyMajorPeaks Identify peaks based on the ridges in 2-D CWT coefficient matrix
localMaximum Identify local maximum within a slide window.
MassSpecWavelet Peak detection of mass spectrum by Wavelet transform based methods
mzInd2vRange Match m/z index to m/z value with a certain error range
mzV2indRange Match m/z value to m/z index with a certain error range
peakDetectionCWT The main function of peak detection by CWT based pattern matching
plotLocalMax Plot the local maximum matrix
plotPeak Plot the identified peaks over the spectrum
plotRidgeList Plot the ridge list
smoothDWT smooth (denoise) the spectrum by DWT (Discrete Wavelet Transform)
tuneInPeakInfo Tune in the peak information: peak position and peak scale