baseline.lowpass: Low-pass FFT filter

In baseline: Baseline Correction of Spectra

Low-pass FFT filter

Description

An algorithm for removing baselines based on Fast Fourier Transform filtering

Usage

baseline.lowpass(spectra, steep = 2, half = 5)

Arguments

spectra	Matrix with spectra in rows
steep	Steepness of filter curve
half	Half-way point of filter curve

Details

Since the scale of the spectra will be different after filtering, baselines will not be returned by the algorithm

Value

baseline	Matrix of baselines corresponding to spectra spectra
corrected	Matrix of baseline corrected spectra

Author(s)

Kristian Hovde Liland and Bjørn-Helge Mevik

References

AHMET K. ATAKAN, W. E. BLASS, and D. E. JENNINGS: Elimination of Baseline Variations from a Recorded Spectrum by Ultra-low Frequency Filtering

Examples

data(milk)
bc.lowpass <- baseline(milk$spectra[1,, drop=FALSE], method='lowpass')
## Not run: 
	plot(bc.lowpass)

## End(Not run)

baseline documentation built on Nov. 18, 2023, 5:14 p.m.