Inheritance diagram for ShowerRecoTools::ShowerPCAEigenvalueLength:

Public Member Functions
	ShowerPCAEigenvalueLength (const fhicl::ParameterSet &pset)

int	CalculateElement (const art::Ptr< recob::PFParticle > &pfparticle, art::Event &Event, reco::shower::ShowerElementHolder &ShowerEleHolder) override

Public Member Functions inherited from ShowerRecoTools::IShowerTool
	IShowerTool (const fhicl::ParameterSet &pset)

virtual	~IShowerTool () noexcept=default

int	RunShowerTool (const art::Ptr< recob::PFParticle > &pfparticle, art::Event &Event, reco::shower::ShowerElementHolder &ShowerEleHolder, std::string evd_display_name_append="")

virtual void	InitialiseProducers ()

void	SetPtr (art::ProducesCollector *collector)

void	InitaliseProducerPtr (reco::shower::ShowerProducedPtrsHolder &uniqueproducerPtrs)

virtual int	AddAssociations (const art::Ptr< recob::PFParticle > &pfpPtr, art::Event &Event, reco::shower::ShowerElementHolder &ShowerEleHolder)

Private Attributes
art::InputTag	fPFParticleLabel

int	fVerbose

std::string	fShowerPCAInputLabel

std::string	fShowerLengthOutputLabel

std::string	fShowerOpeningAngleOutputLabel

float	fNSigma

Additional Inherited Members
Protected Member Functions inherited from ShowerRecoTools::IShowerTool
const shower::LArPandoraShowerAlg &	GetLArPandoraShowerAlg () const

template<class T >
art::Ptr< T >	GetProducedElementPtr (std::string Name, reco::shower::ShowerElementHolder &ShowerEleHolder, int iter=-1)

template<class T >
void	InitialiseProduct (std::string Name, std::string InstanceName="")

template<class T , class A , class B >
void	AddSingle (A &a, B &b, std::string Name)

int	GetVectorPtrSize (std::string Name)

void	PrintPtrs ()

void	PrintPtr (std::string Name)

Detailed Description

Definition at line 18 of file ShowerPCAEigenvalueLength_tool.cc.

Constructor & Destructor Documentation

ShowerRecoTools::ShowerPCAEigenvalueLength::ShowerPCAEigenvalueLength ( const fhicl::ParameterSet & pset )

Definition at line 37 of file ShowerPCAEigenvalueLength_tool.cc.

     : IShowerTool(pset.get<fhicl::ParameterSet>("BaseTools"))
     , fPFParticleLabel(pset.get<art::InputTag>("PFParticleLabel"))
     , fVerbose(pset.get<int>("Verbose"))
     , fShowerPCAInputLabel(pset.get<std::string>("ShowerPCAInputLabel"))
     , fShowerLengthOutputLabel(pset.get<std::string>("ShowerLengthOutputLabel"))
     , fShowerOpeningAngleOutputLabel(pset.get<std::string>("ShowerOpeningAngleOutputLabel"))
     , fNSigma(pset.get<float>("NSigma"))
   {}

Member Function Documentation

int ShowerRecoTools::ShowerPCAEigenvalueLength::CalculateElement	(	const art::Ptr< recob::PFParticle > &	pfparticle,
		art::Event &	Event,
		reco::shower::ShowerElementHolder &	ShowerEleHolder
	)

overridevirtual

Implements ShowerRecoTools::IShowerTool.

Definition at line 48 of file ShowerPCAEigenvalueLength_tool.cc.

   {
 
     if (!ShowerEleHolder.CheckElement(fShowerPCAInputLabel)) {
       if (fVerbose)
         mf::LogError("ShowerPCAEigenvalueLength") << "PCA not set, returning " << std::endl;
       return 1;
     }
 
     recob::PCAxis PCA = recob::PCAxis();
     ShowerEleHolder.GetElement(fShowerPCAInputLabel, PCA);
 
     const double* eigenValues = PCA.getEigenValues();
 
     // The PCA eigenvalues give the deviance of space points around the center
     // Take the sqrt to get std. dev and take fNSigma in each direction:
     // Call the length fNSigma x 2 x std. dev. along primary eigenvalues
     // Call the width fNSigma x 2 x std. dev. along secondary eigenvalues
 
     //TODO: Actually calculate the erros (Maybe fNSigma+-1Sigma?)
 
     //Find the length
     double primaryEigenValue = (eigenValues)[0];
     double ShowerLength = std::sqrt(primaryEigenValue) * 2 * fNSigma;
     double ShowerLengthError = -999;
 
     //Find the width of the shower
     double secondaryEigenValue = (eigenValues)[1];
     double ShowerWidth = std::sqrt(secondaryEigenValue) * 2 * fNSigma;
 
     double ShowerAngle = std::atan(ShowerWidth / ShowerLength);
     double ShowerAngleError = -999;
 
     // Fill the shower element holder
     ShowerEleHolder.SetElement(ShowerLength, ShowerLengthError, fShowerLengthOutputLabel);
     ShowerEleHolder.SetElement(ShowerAngle, ShowerAngleError, fShowerOpeningAngleOutputLabel);
 
     return 0;
   }