Command: ChnGenLSFitWeighted

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Command: ChnGenLSFitWeighted

Specifies the k-dimensional linear curve values and the k-dimensional coefficients for linear fitting that best fit a k-dimensional curve using the least square method. DIAdem includes the y-channel weightings.

Input Parameters

Y	Specifies the data channel containing the y-values of the signal.
ChnList	Specifies one or more channels. Channel list variable A channel list is a Channel or Channel list object, or a text that refers to one or several channels. For more information about the value range, refer to Channel lists.
Y1	Specifies the data channel containing the weightings for the y-values of the signal.
ResultChannel	Specifies the result channel containing the y-values of the approximation function.
GenLSFitCovariance	Specifies whether DIAdem generates the covariance matrix for a general LS linear fitting. Boolean variable
GenLSFitAlgorithm	Specifies the algorithm for the general LS linear fitting. Enumeration variable Enumeration variable with the following selection terms Script Term Interface Term, Explanation "SVD" SVD "Givens" Givens "Givens2" Givens2 "Householder" Householder "LU Decomposition" LU decomposition (triangular decomposition) "Cholesky" Cholesky "SVD for Rank Deficient H" SVD for rank deficient matrix H The LU decomposition is also called triangular decomposition.

Global Parameters

GenLSFitWeighted

Specifies whether DIAdem weights the y-values of the general LS linear fitting. Boolean variable

Return Parameters

GenLSFitMSE

Receives the mean squared error of a general LS linear fitting. Floating-point number variable Access: Read only

Note  DIAdem saves the mean squared error in the following custom properties of the result channels: Result~GeneralLSLinearFit~MSE.

DIAdem calculates a result channel with the coefficients and a covariance matrix if the GenLSFitCovariance variable has the value TRUE. The number of calculated coefficients is equal the column number of matrix H. This is the matrix which corresponds to the formula and which DIAdem uses for the adaptation to the amount {X, Y}. The number of matrix columns is equal the number of specified channels in the variable ChnList.

Refer to the Help page General LS Linear Fitting for further information.

Dialog Box Call

Call SUDDlgShow("Main", ResourceDrv & "AnaChnGenLSFit")

General LS Linear Fitting

Related Topics

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