1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 //_________________________________________________________________________
19 // A test analysis task to check the pt of tracks distribution in simulated data
22 //////////////////////////////////////////////////////////////////////////////
31 #include "AliAnalysisTaskPt.h"
35 //________________________________________________________________________
36 AliAnalysisTaskPt::AliAnalysisTaskPt(const char *name) :
37 AliAnalysisTask(name,""),
42 // Input slot #0 works with an Ntuple
43 DefineInput(0, TChain::Class());
44 // Output slot #0 writes into a TH1 container
45 DefineOutput(0, TObjArray::Class());
48 //________________________________________________________________________
49 void AliAnalysisTaskPt::ConnectInputData(Option_t *)
51 // Initialisation of branch container and histograms
53 AliInfo(Form("*** Initialization of %s", GetName())) ;
56 fChain = dynamic_cast<TChain *>(GetInputData(0)) ;
58 AliError(Form("Input 0 for %s not found\n", GetName()));
62 // One should first check if the branch address was taken by some other task
63 char ** address = (char **)GetBranchAddress(0, "ESD");
65 fESD = (AliESD*)(*address);
68 SetBranchAddress(0, "ESD", &fESD);
72 //________________________________________________________________________
73 void AliAnalysisTaskPt::CreateOutputObjects()
79 fhPt = new TH1F("fhPt","This is the Pt distribution",15,0.1,3.1);
80 fhPt->SetStats(kTRUE);
81 fhPt->GetXaxis()->SetTitle("P_{T} [GeV]");
82 fhPt->GetYaxis()->SetTitle("#frac{dN}{dP_{T}}");
83 fhPt->GetXaxis()->SetTitleColor(1);
84 fhPt->SetMarkerStyle(kFullCircle);
86 // create output container
88 fOutputContainer = new TObjArray(1) ;
89 fOutputContainer->SetName(GetName()) ;
91 fOutputContainer->AddAt(fhPt, 0) ;
94 //________________________________________________________________________
95 void AliAnalysisTaskPt::Exec(Option_t *)
97 // Processing of one event
99 Long64_t entry = fChain->GetReadEntry() ;
102 AliError("fESD is not connected to the input!") ;
106 if ( !((entry-1)%100) )
107 AliInfo(Form("%s ----> Processing event # %lld", (dynamic_cast<TChain *>(fChain))->GetFile()->GetName(), entry)) ;
109 //************************ Pt tracks *************************************
111 for(Int_t iTracks = 0; iTracks < fESD->GetNumberOfTracks(); iTracks++) {
112 AliESDtrack * ESDTrack = fESD->GetTrack(iTracks);
113 Double_t momentum[3];
114 ESDTrack->GetPxPyPz(momentum);
115 Double_t Pt = sqrt(pow(momentum[0],2) + pow(momentum[1],2));
119 PostData(0, fOutputContainer);
122 //________________________________________________________________________
123 void AliAnalysisTaskPt::Terminate(Option_t *)
125 // Processing when the event loop is ended
127 Bool_t problem=kFALSE;
129 AliInfo(Form(" *** %s Report:", GetName())) ;
131 TCanvas *c1 = new TCanvas("c1","Pt",10,10,310,310);
132 c1->SetFillColor(10);
133 c1->SetHighLightColor(10);
135 c1->cd(1)->SetLeftMargin(0.15);
136 c1->cd(1)->SetBottomMargin(0.15);
137 if (fhPt->GetMaximum() > 0 )
138 c1->cd(1)->SetLogy();
139 fOutputContainer = (TObjArray*)GetOutputData(0);
140 fhPt = (TH1F*)fOutputContainer->At(0);
141 if (fhPt) fhPt->DrawCopy("E");
143 c1->Print("TracksPt.eps");
146 sprintf(line, ".!tar -zcf %s.tar.gz *.eps", GetName()) ;
147 gROOT->ProcessLine(line);
148 sprintf(line, ".!rm -fR *.eps");
149 gROOT->ProcessLine(line);
151 AliInfo(Form("!!! All the eps files are in %s.tar.gz !!!", GetName())) ;
155 report="Problems found, please check!!!";
159 AliInfo(Form("*** %s Summary Report: %s \n",GetName(), report)) ;