Filter Spectra by TIC (Top N per group) — Spectra_filter_TIC • MSdev

Split a Spectra object by metadata variables and keep the top-N spectra by total ion current (TIC) in each split.

Usage

Spectra_filter_TIC(
  sp,
  topN = 10,
  split_var = c("sample.source", "CE", "polarity")
)

Arguments

sp: A Spectra object.
topN: Integer. Number of spectra to keep per split (default 10). If NULL or Inf, returns sp unchanged.
split_var: Character vector of column names (default c("sample.source","CE","polarity")). Variables not present in Spectra::spectraData(sp) are ignored. "CE" is treated as an alias for "collisionEnergy".

Value

A filtered Spectra object.