get_agilent_threshold: Calculate purity thresholds

In ethanbass/chromatographR: Chromatographic Data Analysis Toolset

Calculate purity thresholds

Description

Calculate purity thresholds

Usage

get_agilent_threshold(
  x,
  pos,
  weight = 1,
  noise_variance = NULL,
  noise_threshold = 0.005,
  lambdas
)

Arguments

x	A chromatogram in matrix format
pos	A vector containing peak information
weight	Scaling parameter affecting stringency of threshold. Defaults to 1.
noise_variance	Variance of noise.
noise_threshold	Threshold to define noise. Highest proportion of maximum absorbance. Defaults to .005.
lambdas	Wavelengths to include

Value

Returns a vector of purity thresholds at each retention time index within the peak specified by pos.

Author(s)

Ethan Bass

References

Stahl, Mark. “Peak Purity Analysis in HPLC and CE Using Diode-Array Technology.” Agilent Technologies, April 1, 2003, 16. https://www.agilent.com/cs/library/applications/5988-8647EN.pdf

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