Retrieve feature chromatograms from MSdev object

Retrieve stored feature chromatograms from object@xcmsData$Positive_Chromatograms / $Negative_Chromatograms (on-disk when applicable), filtered by polarity.

Usage

get_MSdev_Chromatogram(object, polarity = c(0, 1))

Arguments

object

MSdev object

polarity

integer; polarity/polarities to retrieve (0 negative, 1 positive). Default c(0, 1). A single polarity returns the chromatogram object; multiple polarities return a named list (Negative / Positive).

Value

Chromatograms object, or a named list when length(polarity) > 1