findPeaks.MSW,xcmsRaw-method {xcms} | R Documentation |
This method performs peak detection in mass spectrometry direct injection spectrum using a wavelet based algorithm.
## S4 method for signature 'xcmsRaw' findPeaks.MSW(object, snthresh = 3, verbose.columns = FALSE, ...)
object |
The |
snthresh |
|
verbose.columns |
Logical whether additional peak meta data columns should be returned. |
... |
Additional parameters to be passed to the
|
This is a wrapper around the peak picker in Bioconductor's
MassSpecWavelet
package calling
peakDetectionCWT
and
tuneInPeakInfo
functions.
A matrix, each row representing an intentified peak, with columns:
m/z value of the peak at the centroid position.
Minimum m/z of the peak.
Maximum m/z of the peak.
Always -1
.
Always -1
.
Always -1
.
Integrated (original) intensity of the peak.
Maximum intensity of the peak.
Always NA
.
Maximum MSW-filter response of the peak.
Signal to noise ratio.
Joachim Kutzera, Steffen Neumann, Johannes Rainer
MSW
for the new user interface,
do_findPeaks_MSW
for the downstream analysis
function or peakDetectionCWT
from the
MassSpecWavelet
for details on the algorithm and additionally
supported parameters.