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Filter peak table

Source: R/filter_peaks.R
filter_peaktable.Rd

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.

See also

get_peaktable, filter_peaks

Author

Ethan Bass

Examples

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