View source: R/functions-OnDiskMSnExp.R
estimatePrecursorIntensity determines the precursor intensity for a MS 2
spectrum based on the intensity of the respective signal from the
neighboring MS 1 spectra (i.e. based on the peak with the m/z matching the
precursor m/z of the MS 2 spectrum). Based on parameter
method either the
intensity of the peak from the previous MS 1 scan is used
method = "previous") or an interpolation between the intensity from the
previous and subsequent MS1 scan is used (
method = "interpolation", which
considers also the retention times of the two MS1 scans and the retention
time of the MS2 spectrum).
estimatePrecursorIntensity( x, ppm = 10, method = c("previous", "interpolation"), BPPARAM = bpparam() )
parallel processing setup. See
numeric with length equal to the number of spectra in
returned for MS 1 spectra or if no matching peak in a MS 1 scan can be
found for an MS 2 spectrum
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