find_xcms_ionPeaks(peaktable, mz, rt, mzdiff = 0.01, rt.win = 90, find.RI = FALSE);
the peaktable object, is a collection of the xcms2 object. [as PeakSet]
target ion m/z. [as double]
target ion rt in seconds. [as double]
the mass tolerance error in data unit delta dalton, apply for matches between the peaktable precursor m/z and the given ion mz value. [as double]
the rt window size for matches the rt. should be in data unit seconds. [as double]
data is re-ordered via the tolerance error