UnbinnedFitDeDxEstimator Class Reference

#include <UnbinnedFitDeDxEstimator.h>

Inheritance diagram for UnbinnedFitDeDxEstimator:

Public Member Functions
virtual std::pair< float, float >	dedx (const reco::DeDxHitCollection &Hits)
	UnbinnedFitDeDxEstimator ()
virtual	~UnbinnedFitDeDxEstimator ()
Public Member Functions inherited from BaseDeDxEstimator
virtual	~BaseDeDxEstimator ()

Public Attributes
double	data [50]
TF1 *	f1
UnbinnedLikelihoodFit	fitter

Detailed Description

Definition at line 13 of file UnbinnedFitDeDxEstimator.h.

Constructor & Destructor Documentation

UnbinnedFitDeDxEstimator::UnbinnedFitDeDxEstimator ( )

inline

Definition at line 17 of file UnbinnedFitDeDxEstimator.h.

References f1, fitter, and UnbinnedLikelihoodFit::setFunction().

                             {
    fitter.setFunction((f1 = new TF1("myLandau","TMath::Landau(x,[0],[1],1)",0,255)));
  }

virtual UnbinnedFitDeDxEstimator::~UnbinnedFitDeDxEstimator ( )

inlinevirtual

Definition at line 21 of file UnbinnedFitDeDxEstimator.h.

References f1.

                                      {
    // clean up everything
    delete f1;
  }

Member Function Documentation

virtual std::pair<float,float> UnbinnedFitDeDxEstimator::dedx ( const reco::DeDxHitCollection &  Hits )

inlinevirtual

Implements BaseDeDxEstimator.

Definition at line 26 of file UnbinnedFitDeDxEstimator.h.

References data, f1, UnbinnedLikelihoodFit::fit(), fitter, and i.

                                                                       {
    // if there is no hit, returns invalid.
    if(Hits.size()==0) return std::make_pair(-1,-1);
    // sets the initial parameters
    f1->SetParameters(3.0 , 0.3);
    // fills a temporary array and performs the fit
    uint32_t i=0;
    for (reco::DeDxHitCollection::const_iterator hit = Hits.begin(); hit!=Hits.end(); ++hit,++i) {
      data[i] = hit->charge();
    }
    // fit !
    fitter.fit(Hits.size(),data);
    // returns the mpv and its error
    return std::make_pair(f1->GetParameter(0),f1->GetParError(0)); 
  }

Member Data Documentation

double UnbinnedFitDeDxEstimator::data[50]

Definition at line 43 of file UnbinnedFitDeDxEstimator.h.

Referenced by cuy.FindIssue::__init__(), and dedx().

TF1* UnbinnedFitDeDxEstimator::f1

Definition at line 44 of file UnbinnedFitDeDxEstimator.h.

Referenced by dedx(), UnbinnedFitDeDxEstimator(), and ~UnbinnedFitDeDxEstimator().

UnbinnedLikelihoodFit UnbinnedFitDeDxEstimator::fitter

Definition at line 45 of file UnbinnedFitDeDxEstimator.h.

Referenced by dedx(), and UnbinnedFitDeDxEstimator().