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Filter peak lists

Source: R/filter_peaks.R
filter_peaks.Rd

Utility function for filtering peaks from a peak_list object. Peaks can be filtered according to height, area, standard deviation, and/or retention time.

Usage

filter_peaks(peak_list, min_height, min_area, min_sd, max_sd, min_rt, max_rt)

Arguments

peak_list

A peak_list object, consisting of a nested list of peak tables, where the first level is the sample, and the second level is the spectral component. Every component is described by a data.frame where every row represents a peak, and the columns contain information on retention time, peak shape, height, and area.

min_height

Minimum peak height.

min_area

Minimum peak area.

min_sd

Minimal standard deviation.

max_sd

Maximum standard deviation.

min_rt

Minimum retention time.

max_rt

Maximum retention time.

Value

A filtered peak_list object containing only peaks that satisfy the specified criteria.

See also

get_peaks, filter_peaktable

Author

Ron Wehrens, Ethan Bass

Examples

data(Sa_warp)
pks <- get_peaks(Sa_warp[1], lambda = "210")
filter_peaks(pks, min_height = 100)
#> A peak_list with 1 samples and 1 wavelength(s) (210 nm)
#> Fit method: egh | Time unit: min | sd_max: 50
#> Total peaks: 8 (mean 8 per sample)
#> Source: Sa_warp[1]