findPeaks.matchedFilter-methods {xcms} | R Documentation |
object |
xcmsRaw object |
fwhm |
full width at half maximum of matched filtration gaussian model peak |
sigma |
standard deviation of matched filtration model peak |
max |
maximum number of peaks per extracted ion chromatogram |
snthresh |
signal to noise ratio cutoff |
step |
step size to use for profile generation |
steps |
number of steps to merge prior to filtration |
mzdiff |
minimum difference in m/z for peaks with overlapping retention times |
index |
return indicies instead of values for m/z and retention times |
sleep |
number of seconds to pause between plotting peak finding cycles |
A matrix with columns:
mz |
weighted (by intensity) mean of peak m/z across scans |
mzmin |
m/z of minimum step |
mzmax |
m/z of maximum step |
rt |
retention time of peak midpoint |
rtmin |
leading edge of peak retention time |
rtmax |
trailing edge of peak retention time |
into |
integrated area of original (raw) peak |
intf |
integrated area of filtered peak |
maxo |
maximum intensity of original (raw) peak |
maxf |
maximum intensity of filtered peak |
i |
rank of peak identified in merged EIC (<= max )
|
sn |
signal to noise ratio of the peak |
findPeaks.matchedFilter(object, fwhm = 30, sigma = fwhm/2.3548, max = 5,
snthresh = 10, step = 0.1, steps = 2, mzdiff = 0.8 - step*steps,
index = FALSE, sleep = 0)
Colin A. Smith, csmith@scripps.edu
findPeaks-methods
xcmsRaw-class