ALSBase Class

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

Inheritance Hierarchy

Namespace: Altaxo.Science.Spectroscopy.BaselineEstimation
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3448.0 (4.8.3448.0)

Syntax

public abstract class ALSBase : ALSMethodsBase, 
	IEquatable<ALSBase>

The ALSBase type exposes the following members.

Constructors

	Name	Description
	ALSBase	Initializes a new instance of the ALSBase 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.
	MaximumNumberOfIterations	Gets or sets the maximum number of iterations. The default value is 10.
	Order	Gets the order of the difference penalty.
	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 lead to stronger suppression of (positive) peaks.
	ScaleLambdaWithXUnits	Gets a value indicating whether Lambda is scaled with the x-units, so that the effect of baseline estimation is independent of the resolution of the spectrum.

Methods

	Name	Description
	Execute(Double, Double, Int32)	(Inherited from ALSMethodsBase)
	Execute(ReadOnlySpanDouble, ReadOnlySpanDouble, SpanDouble)	(Overrides ALSMethodsBaseExecute(ReadOnlySpanDouble, ReadOnlySpanDouble, SpanDouble))
	FillBandMatrixOrder1	Fills a tridiagonal band matrix for a first-order difference penalty. (Inherited from ALSMethodsBase)
	FillBandMatrixOrder2	Fills a pentadiagonal band matrix for a second-order difference penalty. (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)
	ToString	(Overrides ALSMethodsBase.ToString)
	UpdateBandMatrixDiagonalOrder1	Updates only the diagonal of a tridiagonal band matrix for a first-order difference penalty. (Inherited from ALSMethodsBase)
	UpdateBandMatrixDiagonalOrder2	Updates only the diagonal of a pentadiagonal band matrix for a second-order difference penalty. (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