MuonResidualsBfieldAngleFitter Class Reference

#include <MuonResidualsBfieldAngleFitter.h>

Inheritance diagram for MuonResidualsBfieldAngleFitter:

Public Types
enum	{   kAngle = 0, kBfrompt, kBfrompz, kdEdx,   kSigma, kGamma, kNPar }
enum	{ kResidual = 0, kQoverPt, kQoverPz, kNData }
Public Types inherited from MuonResidualsFitter
enum	{   kPureGaussian, kPowerLawTails, kROOTVoigt, kGaussPowerTails,   kPureGaussian2D }
enum	{   k1DOF, k5DOF, k6DOF, k6DOFrphi,   kPositionFitter, kAngleFitter, kAngleBfieldFitter }
enum	{   k1111, k1110, k1100, k1010,   k0010 }

Public Member Functions
bool	fit (Alignable *ali)
	MuonResidualsBfieldAngleFitter (int residualsModel, int minHitsPerRegion, int useResiduals, bool weightAlignment=true)
int	ndata ()
int	npar ()
double	plot (std::string name, TFileDirectory *dir, Alignable *ali)
double	sumofweights ()
int	type () const
Public Member Functions inherited from MuonResidualsFitter
void	computeHistogramRangeAndBinning (int which, int &nbins, double &a, double &b)
virtual void	correctBField ()=0
virtual void	correctBField (int idx_momentum, int idx_q)
TMatrixDSym	correlationMatrix ()
double	covarianceElement (int parNum1, int parNum2)
TMatrixDSym	covarianceMatrix ()
void	eraseNotSelectedResiduals ()
double	errorerror (int parNum)
void	fill (double *residual)
void	fix (int parNum, bool val=true)
bool	fixed (int parNum)
void	histogramChi2GaussianFit (int which, double &fit_mean, double &fit_sigma)
double	loglikelihood ()
	MuonResidualsFitter (int residualsModel, int minHits, int useResiduals, bool weightAlignment=true)
int	nfixed ()
long	numResiduals () const
long	numsegments ()
int	parNum2parIdx (int parNum)
void	plotsimple (std::string name, TFileDirectory *dir, int which, double multiplier)
void	plotweighted (std::string name, TFileDirectory *dir, int which, int whichredchi2, double multiplier)
void	read (FILE *file, int which=0)
std::vector< double * > ::const_iterator	residuals_begin () const
std::vector< double * > ::const_iterator	residuals_end () const
int	residualsModel () const
std::vector< bool > &	selectedResidualsFlags ()
void	selectPeakResiduals (double nsigma, int nvar, int *vars)
void	selectPeakResiduals_simple (double nsigma, int nvar, int *vars)
void	setPrintLevel (int printLevel)
void	setStrategy (int strategy)
int	useRes () const
double	value (int parNum)
void	write (FILE *file, int which=0)
virtual	~MuonResidualsFitter ()

Protected Member Functions
void	inform (TMinuit *tMinuit)
Protected Member Functions inherited from MuonResidualsFitter
bool	dofit (void(*fcn)(int &, double *, double &, double *, int), std::vector< int > &parNum, std::vector< std::string > &parName, std::vector< double > &start, std::vector< double > &step, std::vector< double > &low, std::vector< double > &high)
void	initialize_table ()

Additional Inherited Members
Protected Attributes inherited from MuonResidualsFitter
double	m_center [20]
TMatrixDSym	m_cov
std::vector< double >	m_error
std::vector< bool >	m_fixed
double	m_loglikelihood
int	m_minHits
std::map< int, int >	m_parNum2parIdx
int	m_printLevel
double	m_radii [20]
std::vector< double * >	m_residuals
std::vector< bool >	m_residuals_ok
int	m_residualsModel
int	m_strategy
int	m_useResiduals
std::vector< double >	m_value
bool	m_weightAlignment

Detailed Description

Date:

2011/10/12 23:18:05

Revision:

1.6

Author

J. Pivarski - Texas A&M University pivar.nosp@m.ski@.nosp@m.physi.nosp@m.cs.t.nosp@m.amu.e.nosp@m.du

Definition at line 12 of file MuonResidualsBfieldAngleFitter.h.

Member Enumeration Documentation

anonymous enum

Enumerator
kAngle
kBfrompt
kBfrompz
kdEdx
kSigma
kGamma
kNPar

Definition at line 14 of file MuonResidualsBfieldAngleFitter.h.

       {
    kAngle = 0,
    kBfrompt,
    kBfrompz,
    kdEdx,
    kSigma,
    kGamma,
    kNPar
  };

anonymous enum

Enumerator
kResidual
kQoverPt
kQoverPz
kNData

Definition at line 24 of file MuonResidualsBfieldAngleFitter.h.

       {
    kResidual = 0,
    kQoverPt,
    kQoverPz,
    kNData
  };

Constructor & Destructor Documentation

MuonResidualsBfieldAngleFitter::MuonResidualsBfieldAngleFitter ( int  residualsModel, int  minHitsPerRegion, int  useResiduals, bool  weightAlignment = true  )

inline

Definition at line 31 of file MuonResidualsBfieldAngleFitter.h.

: MuonResidualsFitter(residualsModel, minHitsPerRegion, useResiduals, weightAlignment) {}

Member Function Documentation

bool MuonResidualsBfieldAngleFitter::fit ( Alignable *  ali )

virtual

Implements MuonResidualsFitter.

Definition at line 41 of file MuonResidualsBfieldAngleFitter.cc.

References MuonResidualsFitter::dofit(), MuonResidualsFitter::initialize_table(), kAngle, kBfrompt, kBfrompz, kdEdx, kGamma, MuonResidualsFitter::kGaussPowerTails, MuonResidualsFitter::kPureGaussian, kResidual, kSigma, MuonResidualsFitter::m_minHits, timingPdfMaker::mean, MuonResidualsBfieldAngleFitter_FCN(), N, funct::pow(), MuonResidualsFitter::residuals_begin(), MuonResidualsFitter::residuals_end(), MuonResidualsFitter::residualsModel(), mathSSE::sqrt(), errorMatrix2Lands_multiChannel::start, plotscripts::stdev(), launcher::step, makeMuonMisalignmentScenario::sum_x, and makeMuonMisalignmentScenario::sum_xx.

                                                       {
  initialize_table();  // if not already initialized

  double sum_x = 0.;
  double sum_xx = 0.;
  int N = 0;

  for (std::vector<double*>::const_iterator resiter = residuals_begin();  resiter != residuals_end();  ++resiter) {
    const double residual = (*resiter)[kResidual];
//     const double qoverpt = (*resiter)[kQoverPt];

    if (fabs(residual) < 0.1) {  // truncate at 100 mrad
      sum_x += residual;
      sum_xx += residual*residual;
      N++;
    }
  }

  if (N < m_minHits) return false;

  // truncated mean and stdev to seed the fit
  double mean = sum_x/double(N);
  double stdev = sqrt(sum_xx/double(N) - pow(sum_x/double(N), 2));

  // refine the standard deviation calculation
  sum_x = 0.;
  sum_xx = 0.;
  N = 0;
  for (std::vector<double*>::const_iterator resiter = residuals_begin();  resiter != residuals_end();  ++resiter) {
    const double residual = (*resiter)[kResidual];
    if (mean - 1.5*stdev < residual  &&  residual < mean + 1.5*stdev) {
      sum_x += residual;
      sum_xx += residual*residual;
      N++;
    }
  }
  mean = sum_x/double(N);
  stdev = sqrt(sum_xx/double(N) - pow(sum_x/double(N), 2));

  sum_x = 0.;
  sum_xx = 0.;
  N = 0;
  for (std::vector<double*>::const_iterator resiter = residuals_begin();  resiter != residuals_end();  ++resiter) {
    const double residual = (*resiter)[kResidual];
    if (mean - 1.5*stdev < residual  &&  residual < mean + 1.5*stdev) {
      sum_x += residual;
      sum_xx += residual*residual;
      N++;
    }
  }
  mean = sum_x/double(N);
  stdev = sqrt(sum_xx/double(N) - pow(sum_x/double(N), 2));

  std::vector<int> parNum;
  std::vector<std::string> parName;
  std::vector<double> start;
  std::vector<double> step;
  std::vector<double> low;
  std::vector<double> high;

  parNum.push_back(kAngle);     parName.push_back(std::string("angle"));     start.push_back(mean);   step.push_back(0.1);               low.push_back(0.);    high.push_back(0.);
  parNum.push_back(kBfrompt);   parName.push_back(std::string("bfrompt"));   start.push_back(0.);       step.push_back(0.1*stdev/0.05);  low.push_back(0.);    high.push_back(0.);
  parNum.push_back(kBfrompz);   parName.push_back(std::string("bfrompz"));   start.push_back(0.);       step.push_back(0.1*stdev/0.05);  low.push_back(0.);    high.push_back(0.);
  parNum.push_back(kdEdx);      parName.push_back(std::string("dEdx"));      start.push_back(0.);       step.push_back(0.1*stdev/0.05);  low.push_back(0.);    high.push_back(0.);
  parNum.push_back(kSigma);     parName.push_back(std::string("sigma"));     start.push_back(stdev);  step.push_back(0.1*stdev);       low.push_back(0.);    high.push_back(0.);
  if (residualsModel() != kPureGaussian && residualsModel() != kGaussPowerTails) {
  parNum.push_back(kGamma);     parName.push_back(std::string("gamma"));     start.push_back(stdev);  step.push_back(0.1*stdev);       low.push_back(0.);    high.push_back(0.);
  }

  return dofit(&MuonResidualsBfieldAngleFitter_FCN, parNum, parName, start, step, low, high);
}

void MuonResidualsBfieldAngleFitter::inform ( TMinuit *  tMinuit )

protectedvirtual

Implements MuonResidualsFitter.

Definition at line 5 of file MuonResidualsBfieldAngleFitter.cc.

References MuonResidualsBfieldAngleFitter_TMinuit.

                                                            {
  MuonResidualsBfieldAngleFitter_TMinuit = tMinuit;
}

int MuonResidualsBfieldAngleFitter::ndata ( )

inlinevirtual

Implements MuonResidualsFitter.

Definition at line 41 of file MuonResidualsBfieldAngleFitter.h.

References kNData.

{ return kNData; }

int MuonResidualsBfieldAngleFitter::npar ( )

inlinevirtual

Implements MuonResidualsFitter.

Definition at line 35 of file MuonResidualsBfieldAngleFitter.h.

References MuonResidualsFitter::kGaussPowerTails, kNPar, MuonResidualsFitter::kPowerLawTails, MuonResidualsFitter::kPureGaussian, MuonResidualsFitter::kROOTVoigt, and MuonResidualsFitter::residualsModel().

             {
    if (residualsModel() == kPureGaussian || residualsModel() == kGaussPowerTails) return kNPar - 1;
    else if (residualsModel() == kPowerLawTails) return kNPar;
    else if (residualsModel() == kROOTVoigt) return kNPar;
    else assert(false);
  }

double MuonResidualsBfieldAngleFitter::plot ( std::string  name, TFileDirectory *  dir, Alignable *  ali  )

virtual

Implements MuonResidualsFitter.

Definition at line 113 of file MuonResidualsBfieldAngleFitter.cc.

References kAngle, kBfrompt, kBfrompz, kdEdx, kGamma, MuonResidualsFitter::kGaussPowerTails, MuonResidualsFitter::kPowerLawTails, MuonResidualsFitter::kPureGaussian, kQoverPt, kQoverPz, kResidual, MuonResidualsFitter::kROOTVoigt, kSigma, TFileDirectory::make(), MuonResidualsFitter_GaussPowerTails_TF1(), MuonResidualsFitter_powerLawTails_TF1(), MuonResidualsFitter_pureGaussian_TF1(), MuonResidualsFitter_ROOTVoigt_TF1(), NULL, MuonResidualsFitter::numResiduals(), MuonResidualsFitter::residuals_begin(), MuonResidualsFitter::residuals_end(), MuonResidualsFitter::residualsModel(), and MuonResidualsFitter::value().

                                                                                               {
  std::stringstream raw_name, narrowed_name, qoverpt_name, qoverpz_name, psquared_name;
  raw_name << name << "_raw";
  narrowed_name << name << "_narrowed";
  qoverpt_name << name << "_qoverpt";
  qoverpz_name << name << "_qoverpz";
  psquared_name << name << "_psquared";

  TH1F *raw_hist = dir->make<TH1F>(raw_name.str().c_str(), (raw_name.str() + std::string(" (mrad)")).c_str(), 100, -100., 100.);
  TH1F *narrowed_hist = dir->make<TH1F>(narrowed_name.str().c_str(), (narrowed_name.str() + std::string(" (mrad)")).c_str(), 100, -100., 100.);
  TProfile *qoverpt_hist = dir->make<TProfile>(qoverpt_name.str().c_str(), (qoverpt_name.str() + std::string(" (mrad)")).c_str(), 100, -0.05, 0.05);
  TProfile *qoverpz_hist = dir->make<TProfile>(qoverpz_name.str().c_str(), (qoverpz_name.str() + std::string(" (mrad)")).c_str(), 100, -0.05, 0.05);
  TProfile *psquared_hist = dir->make<TProfile>(psquared_name.str().c_str(), (psquared_name.str() + std::string(" (mrad)")).c_str(), 100, -0.05, 0.05);

  narrowed_name << "fit";
  qoverpt_name << "fit";
  qoverpz_name << "fit";
  psquared_name << "fit";

  double scale_factor = double(numResiduals()) * (100. - -100.)/100;   // (max - min)/nbins

  TF1 *narrowed_fit = NULL;
  if (residualsModel() == kPureGaussian) {
    narrowed_fit = new TF1(narrowed_name.str().c_str(), MuonResidualsFitter_pureGaussian_TF1, -100., 100., 3);
    narrowed_fit->SetParameters(scale_factor, value(kAngle) * 1000., value(kSigma) * 1000.);
    narrowed_fit->Write();
  }
  else if (residualsModel() == kPowerLawTails) {
    narrowed_fit = new TF1(narrowed_name.str().c_str(), MuonResidualsFitter_powerLawTails_TF1, -100., 100., 4);
    narrowed_fit->SetParameters(scale_factor, value(kAngle) * 1000., value(kSigma) * 1000., value(kGamma) * 1000.);
    narrowed_fit->Write();
  }
  else if (residualsModel() == kROOTVoigt) {
    narrowed_fit = new TF1(narrowed_name.str().c_str(), MuonResidualsFitter_ROOTVoigt_TF1, -100., 100., 4);
    narrowed_fit->SetParameters(scale_factor, value(kAngle) * 1000., value(kSigma) * 1000., value(kGamma) * 1000.);
    narrowed_fit->Write();
  }
  else if (residualsModel() == kGaussPowerTails) {
    narrowed_fit = new TF1(narrowed_name.str().c_str(), MuonResidualsFitter_GaussPowerTails_TF1, -100., 100., 3);
    narrowed_fit->SetParameters(scale_factor, value(kAngle) * 1000., value(kSigma) * 1000.);
    narrowed_fit->Write();
  }

  TF1 *qoverpt_fit = new TF1(qoverpt_name.str().c_str(), "[0]+x*[1]", -0.05, 0.05);
  qoverpt_fit->SetParameters(value(kAngle) * 1000., value(kBfrompt) * 1000.);
  qoverpt_fit->Write();

  TF1 *qoverpz_fit = new TF1(qoverpz_name.str().c_str(), "[0]+x*[1]", -0.05, 0.05);
  qoverpz_fit->SetParameters(value(kAngle) * 1000., value(kBfrompz) * 1000.);
  qoverpz_fit->Write();

  TF1 *psquared_fit = new TF1(psquared_name.str().c_str(), "[0]+[1]*x**2", -0.05, 0.05);
  psquared_fit->SetParameters(value(kAngle) * 1000., value(kdEdx) * 1000.);
  psquared_fit->Write();

  for (std::vector<double*>::const_iterator resiter = residuals_begin();  resiter != residuals_end();  ++resiter) {
    const double raw_residual = (*resiter)[kResidual];
    const double qoverpt = (*resiter)[kQoverPt];
    const double qoverpz = (*resiter)[kQoverPz];
    const double psquared = (1./qoverpt/qoverpt + 1./qoverpz/qoverpz) * (qoverpt > 0. ? 1. : -1.);

    double qoverpt_correction = value(kBfrompt) * qoverpt;
    double qoverpz_correction = value(kBfrompz) * qoverpz;
    double dEdx_correction = value(kdEdx) * psquared;
    double corrected_residual = raw_residual - qoverpt_correction - qoverpz_correction - dEdx_correction;

    raw_hist->Fill(raw_residual * 1000.);
    narrowed_hist->Fill(corrected_residual * 1000.);

    qoverpt_hist->Fill(qoverpt, (raw_residual - qoverpz_correction - dEdx_correction) * 1000.);
    qoverpz_hist->Fill(qoverpz, (raw_residual - qoverpt_correction - dEdx_correction) * 1000.);
    psquared_hist->Fill(psquared, (raw_residual - qoverpt_correction - qoverpz_correction) * 1000.);
  }

  return 0.;
}

double MuonResidualsBfieldAngleFitter::sumofweights ( )

inlinevirtual

Implements MuonResidualsFitter.

Definition at line 44 of file MuonResidualsBfieldAngleFitter.h.

References MuonResidualsFitter::numResiduals().

{ return numResiduals(); }

int MuonResidualsBfieldAngleFitter::type ( ) const

inlinevirtual

Implements MuonResidualsFitter.

Definition at line 33 of file MuonResidualsBfieldAngleFitter.h.

References MuonResidualsFitter::kAngleBfieldFitter.

Referenced by Vispa.Plugins.ConfigEditor.ConfigDataAccessor.ConfigDataAccessor::inputCommands(), Vispa.Plugins.ConfigEditor.ConfigDataAccessor.ConfigDataAccessor::outputCommands(), Vispa.Plugins.ConfigEditor.ConfigDataAccessor.ConfigDataAccessor::outputEventContent(), and Vispa.Plugins.ConfigEditor.ConfigDataAccessor.ConfigDataAccessor::properties().

{ return MuonResidualsFitter::kAngleBfieldFitter; }