ALS Class

Implements the Asymmetric Least Squares method for baseline estimation, proposed by Eilers and Boelens 2005 [1].

Inheritance Hierarchy

Namespace: Altaxo.Science.Spectroscopy.BaselineEvaluation
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3179.0 (4.8.3179.0)

Syntax

public class ALS : ALSBase, IBaselineEvaluation, ISingleSpectrumPreprocessor, 
	IEquatable<ALS>

The ALS type exposes the following members.

Constructors

	Name	Description
	ALS	Initializes a new instance of the ALS class

Properties

	Name	Description
	Lambda	Gets or sets the smoothing parameter lambda. The default value is 1E6. The higher lambda is, the smoother the resulting curve will be. (Inherited from ALSBase)
	MaximumNumberOfIterations	Gets or sets the maximum number of iterations. The default value is 10. (Inherited from ALSBase)
	Order	(Inherited from ALSBase)
	P	Gets or sets the weighting parameter. The default value is 0.1. A value of 0.5 leads to symmetric weighting of positive and negative deviations. Values less than 0.5 leads to stronger suppression of (positive) peaks. (Inherited from ALSBase)
	ScaleLambdaWithXUnits	If true, lambda is scaled with the x units, so that the effect of baseline estimation is independent on the resolution of the spectrum. (Inherited from ALSBase)

Methods

	Name	Description
	Execute(Double, Double, Int32)	Executes the processor.
	Execute(ReadOnlySpanDouble, ReadOnlySpanDouble, SpanDouble)	(Inherited from ALSBase)
	FillBandMatrixOrder1	(Inherited from ALSMethodsBase)
	FillBandMatrixOrder2	(Inherited from ALSMethodsBase)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object)
	GetType	Gets the Type of the current instance. (Inherited from Object)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object)
	UpdateBandMatrixDiagonalOrder1	(Inherited from ALSMethodsBase)
	UpdateBandMatrixDiagonalOrder2	(Inherited from ALSMethodsBase)

Remarks

References:

[1] P. H. C. Eilers and H. F. M. Boelens, Baseline correction with asymmetric least squares smoothing, Leiden University Medical Centre report, 2005