//*-- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (SUBATECH & Kurchatov Institute)
//////////////////////////////////////////////////////////////////////////////
// Clusterization class. Performs clusterization (collects neighbouring active cells) and
-// unfolding of the clusters with several local maxima.
-// results are stored in TreeR#, branches PHOSEmcRP (EMC recPoints),
+// unfolds the clusters having several local maxima.
+// Results are stored in TreeR#, branches PHOSEmcRP (EMC recPoints),
// PHOSCpvRP (CPV RecPoints) and AliPHOSClusterizer (Clusterizer with all
// parameters including input digits branch title, thresholds etc.)
-// This TTask normally called from Reconstructioner, but as well can be used it in
-// standalone mode:
-// root [0] AliPHOSClusterizerv1 * cl = new AliPHOSClusterizerv1("galice.root")
-// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
+// This TTask is normally called from Reconstructioner, but can as well be used in
+// standalone mode.
+// Use Case:
+// root [0] AliPHOSClusterizerv1 * cl = new AliPHOSClusterizerv1("galice.root")
+// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
// //reads gAlice from header file "..."
-// root [1] cl->ExecuteTask()
+// root [1] cl->ExecuteTask()
// //finds RecPoints in all events stored in galice.root
-// root [2] cl->SetDigitsBranch("digits2")
+// root [2] cl->SetDigitsBranch("digits2")
// //sets another title for Digitis (input) branch
-// root [3] cl->SetRecPointsBranch("recp2")
+// root [3] cl->SetRecPointsBranch("recp2")
// //sets another title four output branches
-// root [4] cl->SetEmcLocalMaxCut(0.03)
+// root [4] cl->SetEmcLocalMaxCut(0.03)
// //set clusterization parameters
-// root [5] cl->ExecuteTask("deb all time")
+// root [5] cl->ExecuteTask("deb all time")
// //once more finds RecPoints options are
// // deb - print number of found rec points
// // deb all - print number of found RecPoints and some their characteristics
//____________________________________________________________________________
AliPHOSClusterizerv1::AliPHOSClusterizerv1(const char* headerFile,const char* digitsFile):AliPHOSClusterizer()
{
+ // ctor with the indication of the file where header Tree and digits Tree are stored
SetName("AliPHOSClusterizer");
SetTitle("Version 1") ;
}
//____________________________________________________________________________
-void AliPHOSClusterizerv1::Exec(Option_t * option){
- // Steerign function
+void AliPHOSClusterizerv1::Exec(Option_t * option)
+{
+ // Steering function
if(!fIsInitialized) Init() ;
Int_t nPar, Float_t * fitparameters)
{
// Calls TMinuit to fit the energy distribution of a cluster with several maxima
- // the initial values for fitting procedure are set in the positions of local maxima.
+ // The initial values for fitting procedure are set equal to the positions of local maxima.
// Cluster will be fitted as a superposition of nPar/3 electromagnetic showers
gMinuit->mncler(); // Reset Minuit's list of paramters
}
//____________________________________________________________________________
-void AliPHOSClusterizerv1::Init(){
+void AliPHOSClusterizerv1::Init()
+{
//Make all memory allocations which can not be done in default constructor.
if(!fIsInitialized){
if(fHeaderFileName.IsNull())
fHeaderFileName = "galice.root" ;
-
+
TFile * file = (TFile*) gROOT->GetFile(fHeaderFileName.Data() ) ;
-
+
if(file == 0){
file = new TFile(fHeaderFileName.Data(),"update") ;
gAlice = (AliRun *) file->Get("gAlice") ;
}
-
+
AliPHOS * phos = (AliPHOS *) gAlice->GetDetector("PHOS") ;
fGeom = AliPHOSGeometry::GetInstance(phos->GetGeometry()->GetName(),phos->GetGeometry()->GetTitle() );
-
+
fDigits = new TClonesArray("AliPHOSDigit",10) ;
fDigitizer = new AliPHOSDigitizer() ;
fEmcRecPoints = new TObjArray(200) ;
fCpvRecPoints = new TObjArray(200) ;
fEmcRecPoints->SetOwner(); // This lets Clear() really detete rec.points in array
fCpvRecPoints->SetOwner();
-
+
if(!gMinuit) gMinuit = new TMinuit(100) ;
// add Task to //root/Tasks folder
// Gives the neighbourness of two digits = 0 are not neighbour but continue searching
// = 1 are neighbour
// = 2 are not neighbour but do not continue searching
- // neighbours are defined as digits having at least common vertex
+ // neighbours are defined as digits having at least a common vertex
// The order of d1 and d2 is important: first (d1) should be a digit already in a cluster
// which is compared to a digit (d2) not yet in a cluster
return rv ;
}
//____________________________________________________________________________
-Bool_t AliPHOSClusterizerv1::ReadDigits(){
- //reads digitis with specified title from TreeD
+Bool_t AliPHOSClusterizerv1::ReadDigits()
+ {
+ // reads digitis with specified title from TreeD
fNumberOfEmcClusters = 0 ;
fNumberOfCpvClusters = 0 ;
}
//____________________________________________________________________________
-void AliPHOSClusterizerv1::WriteRecPoints(){
- // checks, if PHOSEmcRP etc. branches with given title already exist,
- // exits without writing, otherwise create new branches with given title
- // fills and wrights TreeR.
+void AliPHOSClusterizerv1::WriteRecPoints()
+{
+ // Checks, if PHOSEmcRP etc. branches with given title already exist,
+ // if yes exits without writing,
+ // else creates new branches with given title
+ // fills and writes into TreeR.
Int_t index ;
//Evaluate poisition, dispersion and other RecPoint properties...
}
//____________________________________________________________________________
-void AliPHOSClusterizerv1::MakeUnfolding(){
- //Unfolds clusters using the shape of ElectroMagnetic shower
+void AliPHOSClusterizerv1::MakeUnfolding()
+{
+ // Unfolds clusters using the shape of an ElectroMagnetic shower
// Performs unfolding of all EMC/CPV but NOT ppsd clusters
- //Unfold first EMC clusters
+ // Unfold first EMC clusters
if(fNumberOfEmcClusters > 0){
Int_t nModulesToUnfold = fGeom->GetNModules() ;
delete[] maxAtEnergy ;
}
}
- //Unfolding of EMC clusters finished
+ // Unfolding of EMC clusters finished
- //Unfold now CPV clusters
+ // Unfold now CPV clusters
if(fNumberOfCpvClusters > 0){
Int_t nModulesToUnfold = fGeom->GetNCPVModules() ;
Double_t AliPHOSClusterizerv1::ShowerShape(Double_t r)
{
// Shape of the shower (see PHOS TDR)
- // If you change this function, change also the gradien evaluation in ChiSquare()
+ // If you change this function, change also the gradient evaluation in ChiSquare()
Double_t r4 = r*r*r*r ;
Double_t r295 = TMath::Power(r, 2.95) ;
//_____________________________________________________________________________
void AliPHOSClusterizerv1::UnfoldingChiSquare(Int_t & nPar, Double_t * Grad, Double_t & fret, Double_t * x, Int_t iflag)
{
- // Calculates th Chi square for the cluster unfolding minimization
+ // Calculates the Chi square for the cluster unfolding minimization
// Number of parameters, Gradient, Chi squared, parameters, what to do
//____________________________________________________________________________
void AliPHOSClusterizerv1::Print(Option_t * option)const
{
+ // Prints the parameters of the clusterizer
if(fIsInitialized){
// Print parameters
cout << " AliPHOSClusterizerv1 not initialized " << endl ;
}
//____________________________________________________________________________
-void AliPHOSClusterizerv1::PrintRecPoints(Option_t * option){
- //Prints list of RecPoints produced at the current pass of AliPHOSClusterizer
+void AliPHOSClusterizerv1::PrintRecPoints(Option_t * option)
+{
+ // Prints list of RecPoints produced at the current pass of AliPHOSClusterizer
cout << "AliPHOSClusterizerv1: " << endl ;
cout << " Found "<< fEmcRecPoints->GetEntriesFast() << " EMC Rec Points and "
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff