recob::MCSFitResult Class Reference

Class storing the result of the Maximum Likelihood fit of Multiple Coulomb Scattering angles between segments within a Track or Trajectory. More...

#include "MCSFitResult.h"

Public Member Functions
	MCSFitResult ()=default
	MCSFitResult (int pid, double momFwd, double momFwdUnc, double llhdFwd, double momBwd, double momBwdUnc, double llhdBwd, const std::vector< double > &radlengths, const std::vector< double > &angles)
int	particleIdHyp () const
	particle id hypothesis used in the fit More...
double	fwdMomentum () const
	momentum value from fit assuming a forward track direction More...
double	fwdMomUncertainty () const
	momentum uncertainty from fit assuming a forward track direction More...
double	fwdLogLikelihood () const
	minimum negative log likelihood value from fit assuming a forward track direction More...
double	bwdMomentum () const
	momentum value from fit assuming a backward track direction More...
double	bwdMomUncertainty () const
	momentum uncertainty from fit assuming a backward track direction More...
double	bwdLogLikelihood () const
	minimum negative log likelihood value from fit assuming a backward track direction More...
const std::vector< double > &	segmentRadLengths () const
	vector of radiation lengths of the segments used in the fit More...
const std::vector< double > &	scatterAngles () const
	vector of angles between the segments used in the fit More...
bool	isBestFwd () const
	determines best fit direction based on minumum log likelihood between forward and backward fit More...
double	bestMomentum () const
	momentum for best direction fit More...
double	bestMomUncertainty () const
	momentum uncertainty for best direction fit More...
double	bestLogLikelihood () const
	negative log likelihood for best direction fit More...
double	deltaLogLikelihood () const
	difference in log likelihood between forward and backward fit (absolute value) More...

Private Attributes
double	pid_
	particle id hypothesis used in the fit More...
double	momFwd_
	momentum value from fit assuming a forward track direction More...
double	momFwdUnc_
	momentum uncertainty from fit assuming a forward track direction More...
double	llhdFwd_
	minimum negative log likelihood value from fit assuming a forward track direction More...
double	momBwd_
	momentum value from fit assuming a backward track direction More...
double	momBwdUnc_
	momentum uncertainty from fit assuming a backward track direction More...
double	llhdBwd_
	minimum negative log likelihood value from fit assuming a backward track direction More...
std::vector< double >	radlengths_
	vector of radiation lengths of the segments used in the fit More...
std::vector< double >	angles_
	vector of angles between the segments used in the fit More...

Detailed Description

Class storing the result of the Maximum Likelihood fit of Multiple Coulomb Scattering angles between segments within a Track or Trajectory.

Class storing the result of the Maximum Likelihood fit of Multiple Coulomb Scattering angles between segments within a Track or Trajectory. It stores: the resulting momentum, momentum uncertainty, and best likelihood value (both for fwd and bwd fit); the vectors of segment (radiation) lengths and of scattering angles; the PID hypothesis used in the fit.

Author

G. Cerati (FNAL, MicroBooNE)

Date

2017

Version

1.0

Definition at line 19 of file MCSFitResult.h.

Constructor & Destructor Documentation

recob::MCSFitResult::MCSFitResult ( )

default

recob::MCSFitResult::MCSFitResult ( int  pid, double  momFwd, double  momFwdUnc, double  llhdFwd, double  momBwd, double  momBwdUnc, double  llhdBwd, const std::vector< double > &  radlengths, const std::vector< double > &  angles  )

inline

Definition at line 22 of file MCSFitResult.h.

      : pid_(pid), momFwd_(momFwd), momFwdUnc_(momFwdUnc), llhdFwd_(llhdFwd), momBwd_(momBwd), momBwdUnc_(momBwdUnc), llhdBwd_(llhdBwd), radlengths_(radlengths), angles_(angles) {}

Member Function Documentation

double recob::MCSFitResult::bestLogLikelihood ( ) const

inline

negative log likelihood for best direction fit

Definition at line 62 of file MCSFitResult.h.

References isBestFwd(), llhdBwd_, and llhdFwd_.

{ return isBestFwd() ? llhdFwd_   : llhdBwd_;  }

double recob::MCSFitResult::bestMomentum ( ) const

inline

momentum for best direction fit

Definition at line 56 of file MCSFitResult.h.

References isBestFwd(), momBwd_, and momFwd_.

Referenced by RecoProxyUsageExample::analyze().

{ return isBestFwd() ? momFwd_    : momBwd_;   }

double recob::MCSFitResult::bestMomUncertainty ( ) const

inline

momentum uncertainty for best direction fit

Definition at line 59 of file MCSFitResult.h.

References isBestFwd(), momBwdUnc_, and momFwdUnc_.

{ return isBestFwd() ? momFwdUnc_ : momBwdUnc_;}

double recob::MCSFitResult::bwdLogLikelihood ( ) const

inline

minimum negative log likelihood value from fit assuming a backward track direction

Definition at line 44 of file MCSFitResult.h.

References llhdBwd_.

{ return llhdBwd_;  }

double recob::MCSFitResult::bwdMomentum ( ) const

inline

momentum value from fit assuming a backward track direction

Definition at line 38 of file MCSFitResult.h.

References momBwd_.

{ return momBwd_;   }

double recob::MCSFitResult::bwdMomUncertainty ( ) const

inline

momentum uncertainty from fit assuming a backward track direction

Definition at line 41 of file MCSFitResult.h.

References momBwdUnc_.

{ return momBwdUnc_;}

double recob::MCSFitResult::deltaLogLikelihood ( ) const

inline

difference in log likelihood between forward and backward fit (absolute value)

Definition at line 65 of file MCSFitResult.h.

References llhdBwd_, and llhdFwd_.

{ return std::abs(llhdFwd_-llhdBwd_); }

double recob::MCSFitResult::fwdLogLikelihood ( ) const

inline

minimum negative log likelihood value from fit assuming a forward track direction

Definition at line 35 of file MCSFitResult.h.

References llhdFwd_.

{ return llhdFwd_;  }

double recob::MCSFitResult::fwdMomentum ( ) const

inline

momentum value from fit assuming a forward track direction

Definition at line 29 of file MCSFitResult.h.

References momFwd_.

{ return momFwd_;   }

double recob::MCSFitResult::fwdMomUncertainty ( ) const

inline

momentum uncertainty from fit assuming a forward track direction

Definition at line 32 of file MCSFitResult.h.

References momFwdUnc_.

{ return momFwdUnc_;}

bool recob::MCSFitResult::isBestFwd ( ) const

inline

determines best fit direction based on minumum log likelihood between forward and backward fit

Definition at line 53 of file MCSFitResult.h.

References llhdBwd_, and llhdFwd_.

Referenced by bestLogLikelihood(), bestMomentum(), and bestMomUncertainty().

{ return llhdFwd_<llhdBwd_;                    }

int recob::MCSFitResult::particleIdHyp ( ) const

inline

particle id hypothesis used in the fit

Definition at line 26 of file MCSFitResult.h.

References pid_.

{ return pid_;   }

const std::vector<double>& recob::MCSFitResult::scatterAngles ( ) const

inline

vector of angles between the segments used in the fit

Definition at line 50 of file MCSFitResult.h.

References angles_.

{ return angles_; }

const std::vector<double>& recob::MCSFitResult::segmentRadLengths ( ) const

inline

vector of radiation lengths of the segments used in the fit

Definition at line 47 of file MCSFitResult.h.

References radlengths_.

{ return radlengths_;}

Member Data Documentation

std::vector<double> recob::MCSFitResult::angles_

private

vector of angles between the segments used in the fit

Definition at line 76 of file MCSFitResult.h.

Referenced by scatterAngles().

double recob::MCSFitResult::llhdBwd_

private

minimum negative log likelihood value from fit assuming a backward track direction

Definition at line 74 of file MCSFitResult.h.

Referenced by bestLogLikelihood(), bwdLogLikelihood(), deltaLogLikelihood(), and isBestFwd().

double recob::MCSFitResult::llhdFwd_

private

minimum negative log likelihood value from fit assuming a forward track direction

Definition at line 71 of file MCSFitResult.h.

Referenced by bestLogLikelihood(), deltaLogLikelihood(), fwdLogLikelihood(), and isBestFwd().

double recob::MCSFitResult::momBwd_

private

momentum value from fit assuming a backward track direction

Definition at line 72 of file MCSFitResult.h.

Referenced by bestMomentum(), and bwdMomentum().

double recob::MCSFitResult::momBwdUnc_

private

momentum uncertainty from fit assuming a backward track direction

Definition at line 73 of file MCSFitResult.h.

Referenced by bestMomUncertainty(), and bwdMomUncertainty().

double recob::MCSFitResult::momFwd_

private

momentum value from fit assuming a forward track direction

Definition at line 69 of file MCSFitResult.h.

Referenced by bestMomentum(), and fwdMomentum().

double recob::MCSFitResult::momFwdUnc_

private

momentum uncertainty from fit assuming a forward track direction

Definition at line 70 of file MCSFitResult.h.

Referenced by bestMomUncertainty(), and fwdMomUncertainty().

double recob::MCSFitResult::pid_

private

particle id hypothesis used in the fit

Definition at line 68 of file MCSFitResult.h.

Referenced by particleIdHyp().

std::vector<double> recob::MCSFitResult::radlengths_

private

vector of radiation lengths of the segments used in the fit

Definition at line 75 of file MCSFitResult.h.

Referenced by segmentRadLengths().

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

• lardataobj/v1_36_00/source/lardataobj/RecoBase/MCSFitResult.h