Extract chromatograms for features — MSdev_get_feature_chrom • MSdev

Extract chromatograms for specified features from xcms data via get_xcms_feature_chromatogram (full RT, all samples), storing them as on-disk data.

Usage

MSdev_get_feature_chrom(
  object,
  BPPARAM = SnowParam(workers = max(1L, floor(parallel::detectCores()/2)), progressbar =
    T),
  feature.list = NULL,
  expandMzppm = 2
)

Arguments

object: MSdev object
BPPARAM: BiocParallel backend for parallel processing
feature.list: optional list of feature IDs with names "Positive" and "Negative"
expandMzppm: numeric(1). Passed to get_xcms_feature_chromatogram: extra m/z pad in ppm (mzmin * (1 - ppm/1e6), mzmax * (1 + ppm/1e6)). Default 2.

Value

MSdev object with chromatograms stored