asls.h File Reference

Baseline estimation using Asymmetric Least Squares Smoothing(AsLS). More...

#include <stdexcept>
#include "../smoothing/whittaker.h"

Go to the source code of this file.

Functions
const std::vector< double >	sablib::BaselineAsLS (std::vector< double > &y, const double lambda, const double p, const unsigned int s=2, const unsigned int loop=10, const double eps=1e-3)
	Performs baseline estimation using Asymmetric Least Squares Smoothing (AsLS).

Detailed Description

Baseline estimation using Asymmetric Least Squares Smoothing(AsLS).

Author

Izadori

References:

• Eilers, P. A Perfect Smoother. Analytical Chemistry, 2003, 75(14), 3631-3636.
• Eilers, P. H. C.; Boelens, H. F. M. Baseline Correction with Asymmetric Least Squares Smoothing Leiden University Medical Centre Report 2005, 1(1), 1-5.

Definition in file asls.h.

Function Documentation

BaselineAsLS()

const std::vector< double > sablib::BaselineAsLS	(	std::vector< double > &	y,
		const double	lambda,
		const double	p,
		const unsigned int	s = 2,
		const unsigned int	loop = 10,
		const double	eps = 1e-3 )

Performs baseline estimation using Asymmetric Least Squares Smoothing (AsLS).

Parameters

y	The input data for baseline estimation.
lambda	Smoothing parameter.
p	Weight (asymmetry parameter, typically 0.001 to 0.1).
s	The order of the difference (usually s = 1, 2, or 3).
loop	Maximum number of iterations.
eps	Convergence threshold.

Returns

The estimated baseline.

Exceptions

std::invalid_argument

One or more parameters are wrong.

Definition at line 14 of file asls.cpp.