baseline: baseline.lowpass – R documentation

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baseline.lowpass

Low-pass FFT filter

An algorithm for removing baselines based on Fast Fourier Transform filtering

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

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

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

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

Kristian Hovde Liland and Bjørn-Helge Mevik

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

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

## End(Not run)

Baseline Correction of Spectra

v1.3-1

GPL-2

Authors

Kristian Hovde Liland [aut, cre], Bjørn-Helge Mevik [aut], Roberto Canteri [ctb]

Initial release

2020-09-10