filter_peaktable: Filter peak table

In ethanbass/chromatographR: Chromatographic Data Analysis Toolset

Filter peak table

Description

Utility function to remove peaks from peak table, e.g., because their intensity is too low. Currently one can filter on mean or median peak intensity, or retention time.

Usage

filter_peaktable(
  peak_table,
  rts,
  min_rt,
  max_rt,
  min_value,
  lambda,
  what = c("median", "mean", "max"),
  tol = 0
)

Arguments

peak_table	A peak_table object from get_peaktable.
rts	Vector of retention times to include in the peak table.
min_rt	Minimum retention time to include in the peak table.
max_rt	Maximum retention time to include in the peak table.
min_value	Minimal cutoff for summarized peak intensity.
lambda	Component(s) to include in peak table (e.g. wavelengths if you are using HPLC-DAD/UV).
what	Whether to summarize intensities using mean, median, or max.
tol	Tolerance for matching of retention times to rts.

Value

A peak table similar to the input, with all columns removed from the peak table that do not satisfy the specified criteria.

Author(s)

Ethan Bass

See Also

get_peaktable, filter_peaks

Examples

data(pk_tab)
pk_tab <- filter_peaktable(pk_tab, min_rt = 10, max_rt = 16)

ethanbass/chromatographR documentation built on April 17, 2025, 10:55 a.m.