KalmanCalculator Class Reference

does the calculation of the gain matrix, updates the cov and fitpars More...

#include <KalmanCalculator.h>

Public Member Functions
	KalmanCalculator (int sizeRes, int sizeState)
	constructor
void	updateState (FitParams &fitparams)
	update statevector
void	updateState (FitParams &fitparams, FitParams &oldState)
	update statevector
void	updateCovariance (FitParams &fitparams)
	update the statevectors covariance
double	getChiSquare () const
	get chi2 of this iteration
ErrCode	calculateGainMatrix (const Eigen::Matrix< double, -1, 1, 0, 7, 1 > &residuals, const Eigen::Matrix< double, -1, -1, 0, 7, MAX_MATRIX_SIZE > &G, const FitParams &fitparams, const Eigen::Matrix< double, -1, -1, 0, 7, 7 > *V=0, double weight=1)
	init the kalman machienery
double	getConstraintDim () const
	get dimension of the constraint

Private Attributes
int	m_constrDim
	dimension of the constraint
double	m_chisq
	chi2
Eigen::Matrix< double, -1, 1, 0, 7, 1 >	m_res
	we know the max sizes of the matrices we assume the tree is smaller than MAX_MATRIX_SIZE parameters and the largest constraint is the track constraint with 7 More...
Eigen::Matrix< double, -1, -1, 0, 7, MAX_MATRIX_SIZE >	m_G
	G former H, transforms covraince of {residuals}<->{x,p,E}.
Eigen::Matrix< double, -1, -1, 0, 7, 7 >	m_R
	R residual covariance.
Eigen::Matrix< double, -1, -1, 0, 7, 7 >	m_Rinverse
	R inverse.
Eigen::Matrix< double, -1, -1, 0, MAX_MATRIX_SIZE, 7 >	m_K
	K kalman gain matrix.
Eigen::Matrix< double, -1, -1, 0, MAX_MATRIX_SIZE, 7 >	m_CGt
	C times G^t

Detailed Description

does the calculation of the gain matrix, updates the cov and fitpars

Definition at line 23 of file KalmanCalculator.h.

Member Data Documentation

m_res

Eigen::Matrix< double, -1, 1, 0, 7, 1 > m_res

private

we know the max sizes of the matrices we assume the tree is smaller than MAX_MATRIX_SIZE parameters and the largest constraint is the track constraint with 7

-> Eigen puts this on the stack

Eigen::Matrix < double, col, row, ColMajor, maxCol, maxRow> -1 = Eigen::Dynamic 0 = Eigen::ColMajor (don't touch) vector holding the residuals

Definition at line 74 of file KalmanCalculator.h.

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The documentation for this class was generated from the following files:

• analysis/VertexFitting/TreeFitter/include/KalmanCalculator.h
• analysis/VertexFitting/TreeFitter/src/KalmanCalculator.cc