-#ifndef __CINT__
- #include <iostream.h>
- #include <fstream.h>
-
+/****************************************************************************
+ * Very important, delicate and rather obscure macro. *
+ * *
+ * Creates list of "trackable" tracks, *
+ * calculates efficiency, resolutions etc. *
+ * The ESD tracks must be in an appropriate state (kITSin or kITSrefit) *
+ * *
+ * Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch *
+ ****************************************************************************/
+
+#if !defined(__CINT__) || defined(__MAKECINT__)
+ #include <TMath.h>
+ #include <TError.h>
+ #include <Riostream.h>
+ #include <TH1F.h>
+ #include <TH2F.h>
+ #include <TTree.h>
+ #include <TParticle.h>
+ #include <TCanvas.h>
+ #include <TLine.h>
+ #include <TText.h>
+ #include <TBenchmark.h>
+ #include <TStyle.h>
+ #include <TFile.h>
+ #include <TROOT.h>
+
+ #include "AliStack.h"
+ #include "AliHeader.h"
+ #include "AliTrackReference.h"
+ #include "AliRunLoader.h"
#include "AliRun.h"
- #include "AliITS.h"
- #include "AliITSgeom.h"
- #include "AliITStrackerV2.h"
- #include "AliITStrackV2.h"
- #include "AliITSclusterV2.h"
-
- #include "TFile.h"
- #include "TTree.h"
- #include "TH1.h"
- #include "TObjArray.h"
- #include "TStyle.h"
- #include "TCanvas.h"
- #include "TLine.h"
- #include "TText.h"
- #include "TParticle.h"
+ #include "AliESDEvent.h"
+ #include "AliESDtrack.h"
+
+ #include "AliITSRecPoint.h"
+ #include "AliITSLoader.h"
#endif
-struct GoodTrack {
- Int_t lab;
- Int_t code;
- Float_t px,py,pz;
- Float_t x,y,z;
-};
-Int_t good_tracks(GoodTrack *gt, Int_t max);
-
-Int_t AliITSComparisonV2() {
- cerr<<"Doing comparison...\n";
-
- TFile *cf=TFile::Open("AliITSclustersV2.root");
- if (!cf->IsOpen()) {cerr<<"Can't open AliITSclustersV2.root !\n"; return 1;}
- AliITSgeom *geom=(AliITSgeom*)cf->Get("AliITSgeom");
- if (!geom) { cerr<<"Can't get the ITS geometry !\n"; return 2; }
- AliITStrackerV2 tracker(geom);
-
-// Load tracks
- TFile *tf=TFile::Open("AliITStracksV2.root");
- if (!tf->IsOpen()) {cerr<<"Can't open AliITStracksV2.root !\n"; return 3;}
- TObjArray tarray(2000);
- TTree *tracktree=(TTree*)tf->Get("ITSf");
- if (!tracktree) {cerr<<"Can't get a tree with ITS tracks !\n"; return 4;}
- TBranch *tbranch=tracktree->GetBranch("tracks");
- Int_t nentr=(Int_t)tracktree->GetEntries(),i;
- for (i=0; i<nentr; i++) {
- AliITStrackV2 *iotrack=new AliITStrackV2;
- tbranch->SetAddress(&iotrack);
- tracktree->GetEvent(i);
-
- Int_t tpcLabel=iotrack->GetLabel();
- tracker.CookLabel(iotrack,0.);
- Int_t itsLabel=iotrack->GetLabel();
- if (itsLabel != tpcLabel) iotrack->SetLabel(-TMath::Abs(itsLabel));
- if (tpcLabel < 0) iotrack->SetLabel(-TMath::Abs(itsLabel));
- /*
- if (itsLabel==1234) {
- Int_t nc=iotrack->GetNumberOfClusters();
- for (Int_t k=0; k<nc; k++) {
- Int_t index=iotrack->GetClusterIndex(k);
- AliITSclusterV2 *c=tracker.GetCluster(index);
- cout<<c->GetLabel(0)<<' '<<c->GetLabel(1)<<' '<<c->GetLabel(2)<<endl;
- }
- }
- */
- tarray.AddLast(iotrack);
- }
- tf->Close();
- cf->Close();
-
-/////////////////////////////////////////////////////////////////////////
- GoodTrack gt[15000];
- Int_t ngood=0;
- ifstream in("good_tracks_its");
- if (in) {
- cerr<<"Reading good tracks...\n";
- while (in>>gt[ngood].lab>>gt[ngood].code>>
- gt[ngood].px>>gt[ngood].py>>gt[ngood].pz>>
- gt[ngood].x >>gt[ngood].y >>gt[ngood].z) {
- ngood++;
- cerr<<ngood<<'\r';
- if (ngood==15000) {
- cerr<<"Too many good tracks !\n";
- break;
- }
- }
- if (!in.eof()) cerr<<"Read error (good_tracks_its) !\n";
- } else {
- cerr<<"Marking good tracks (this will take a while)...\n";
- ngood=good_tracks(gt,15000);
- ofstream out("good_tracks_its");
- if (out) {
- for (Int_t ngd=0; ngd<ngood; ngd++)
- out<<gt[ngd].lab<<' '<<gt[ngd].code<<' '<<
- gt[ngd].px<<' '<<gt[ngd].py<<' '<<gt[ngd].pz<<' '<<
- gt[ngd].x <<' '<<gt[ngd].y <<' '<<gt[ngd].z <<endl;
- } else cerr<<"Can not open file (good_tracks_its) !\n";
- out.close();
- }
- cerr<<"Number of good tracks : "<<ngood<<endl;
+Int_t GoodTracksITS(const Char_t *dir=".");
+
+extern AliRun *gAlice;
+extern TBenchmark *gBenchmark;
+extern TROOT *gROOT;
- TH1F *hp=new TH1F("hp","PHI resolution",50,-20.,20.); hp->SetFillColor(4);
- TH1F *hl=new TH1F("hl","LAMBDA resolution",50,-20,20);hl->SetFillColor(4);
- TH1F *hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
- hpt->SetFillColor(2);
- TH1F *hmpt=new TH1F("hmpt","Transverse impact parameter",30,-300,300);
+static Int_t allgood=0;
+static Int_t allselected=0;
+static Int_t allfound=0;
+
+Int_t AliITSComparisonV2
+(Float_t ptcutl=0.2, Float_t ptcuth=10., const Char_t *dir=".") {
+ gBenchmark->Start("AliITSComparisonV2");
+
+ ::Info("AliITSComparisonV2.C","Doing comparison...");
+
+
+ TH1F *hp=(TH1F*)gROOT->FindObject("hp");
+ if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.);
+ hp->SetFillColor(4);
+
+ TH1F *hl=(TH1F*)gROOT->FindObject("hl");
+ if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
+ hl->SetFillColor(4);
+
+ TH1F *hpt=(TH1F*)gROOT->FindObject("hpt");
+ if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
+ hpt->SetFillColor(2);
+
+ TH1F *hmpt=(TH1F*)gROOT->FindObject("hmpt");
+ if (!hmpt)
+ hmpt=new TH1F("hmpt","Transverse impact parameter",30,-777,777);
hmpt->SetFillColor(6);
- TH1F *hz=new TH1F("hz","Longitudinal impact parameter",30,-300,300);
- //hmpt->SetFillColor(6);
- AliITStrackV2 *trk=(AliITStrackV2*)tarray.UncheckedAt(0);
- Double_t pmin=0.1*(100/0.299792458/0.2/trk->GetConvConst());
- Double_t pmax=6.0+pmin;
+ TH1F *hz=(TH1F*)gROOT->FindObject("hz");
+ if (!hz) hz=new TH1F("hz","Longitudinal impact parameter",30,-777,777);
+
+
+
+ TH1F *hgood=(TH1F*)gROOT->FindObject("hgood");
+ if (!hgood) hgood=new TH1F("hgood","Good tracks",30,0.2,6.1);
+
+ TH1F *hfound=(TH1F*)gROOT->FindObject("hfound");
+ if (!hfound) hfound=new TH1F("hfound","Found tracks",30,0.2,6.1);
+
+ TH1F *hfake=(TH1F*)gROOT->FindObject("hfake");
+ if (!hfake) hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1);
- TH1F *hgood=new TH1F("hgood","Good tracks",30,pmin,pmax);
- TH1F *hfound=new TH1F("hfound","Found tracks",30,pmin,pmax);
- TH1F *hfake=new TH1F("hfake","Fake tracks",30,pmin,pmax);
- TH1F *hg=new TH1F("hg","",30,pmin,pmax); //efficiency for good tracks
+ TH1F *hg=(TH1F*)gROOT->FindObject("hg");
+ if (!hg) hg=new TH1F("hg","Efficiency for good tracks",30,0.2,6.1);
hg->SetLineColor(4); hg->SetLineWidth(2);
- TH1F *hf=new TH1F("hf","Efficiency for fake tracks",30,pmin,pmax);
+
+ TH1F *hf=(TH1F*)gROOT->FindObject("hf");
+ if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",30,0.2,6.1);
hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
- TH1F *hptw=new TH1F("hptw","Weghted pt",30,pmax,pmin);
+ TH1F *he=(TH1F*)gROOT->FindObject("he");
+ if (!he)
+ he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,200.);
- while (ngood--) {
- Int_t lab=gt[ngood].lab, tlab=-1;
- Double_t pxg=gt[ngood].px, pyg=gt[ngood].py, pzg=gt[ngood].pz;
- Double_t ptg=TMath::Sqrt(pxg*pxg+pyg*pyg);
+ TH2F *hep=(TH2F*)gROOT->FindObject("hep");
+ if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
+ hep->SetMarkerStyle(8);
+ hep->SetMarkerSize(0.4);
- if (ptg<pmin) continue;
- hgood->Fill(ptg);
+ Char_t fname[100];
+ sprintf(fname,"%s/GoodTracksITS.root",dir);
- AliITStrackV2 *track=0;
- Int_t j;
- for (j=0; j<nentr; j++) {
- track=(AliITStrackV2*)tarray.UncheckedAt(j);
- tlab=track->GetLabel();
- if (lab==TMath::Abs(tlab)) break;
- }
- if (j==nentr) {
- cerr<<"Track "<<lab<<" was not found !\n";
- continue;
+ TFile *refFile=TFile::Open(fname,"old");
+ if (!refFile || !refFile->IsOpen()) {
+ ::Info("AliITSComparisonV2.C","Marking good tracks (will take a while)...");
+ if (GoodTracksITS(dir)) {
+ ::Error("AliITSComparisonV2.C","Can't generate the reference file !");
+ return 1;
+ }
+ }
+ refFile=TFile::Open(fname,"old");
+ if (!refFile || !refFile->IsOpen()) {
+ ::Error("AliITSComparisonV2.C","Can't open the reference file !");
+ return 1;
+ }
+
+ TTree *itsTree=(TTree*)refFile->Get("itsTree");
+ if (!itsTree) {
+ ::Error("AliITSComparisonV2.C","Can't get the reference tree !");
+ return 2;
+ }
+ TBranch *branch=itsTree->GetBranch("ITS");
+ if (!branch) {
+ ::Error("AliITSComparisonV2.C","Can't get the ITS branch !");
+ return 3;
+ }
+ TClonesArray dummy("AliTrackReference",1000), *refs=&dummy;
+ branch->SetAddress(&refs);
+
+
+ sprintf(fname,"%s/AliESDs.root",dir);
+ TFile *ef=TFile::Open(fname);
+ if ((!ef)||(!ef->IsOpen())) {
+ sprintf(fname,"%s/AliESDits.root",dir);
+ ef=TFile::Open(fname);
+ if ((!ef)||(!ef->IsOpen())) {
+ ::Error("AliITSComparisonV2.C","Can't open AliESDits.root !");
+ return 4;
}
- track->Propagate(track->GetAlpha(),3.,0.1/65.19*1.848,0.1*1.848);
- track->PropagateToVertex();
+ }
+ AliESDEvent* event = new AliESDEvent();
+ TTree* esdTree = (TTree*) ef->Get("esdTree");
+ if (!esdTree) {
+ ::Error("AliITSComparison.C", "no ESD tree found");
+ return 6;
+ }
+ event->ReadFromTree(esdTree);
- if (lab==tlab) hfound->Fill(ptg);
- else { hfake->Fill(ptg); cerr<<lab<<" fake\n";}
- Double_t xv,par[5]; track->GetExternalParameters(xv,par);
- Float_t phi=TMath::ASin(par[2]) + track->GetAlpha();
- if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
- if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
- Float_t lam=TMath::ATan(par[3]);
- Float_t pt_1=TMath::Abs(par[4]);
+ //******* Loop over events *********
+ Int_t e=0;
+ while (esdTree->GetEvent(e)) {
+ cout<<endl<<endl<<"********* Processing event number: "<<e<<"*******\n";
+
+ Int_t nentr=event->GetNumberOfTracks();
+ allfound+=nentr;
- Double_t phig=TMath::ATan2(pyg,pxg);
- hp->Fill((phi - phig)*1000.);
+ if (itsTree->GetEvent(e++)==0) {
+ cerr<<"No reconstructable tracks !\n";
+ continue;
+ }
- Double_t lamg=TMath::ATan2(pzg,ptg);
- hl->Fill((lam - lamg)*1000.);
+ Int_t ngood=refs->GetEntriesFast();
+ allgood+=ngood;
+
+ const Int_t MAX=15000;
+ Int_t notf[MAX], nnotf=0;
+ Int_t fake[MAX], nfake=0;
+ Int_t mult[MAX], numb[MAX], nmult=0;
+ Int_t k;
+ for (k=0; k<ngood; k++) {
+ AliTrackReference *ref=(AliTrackReference*)refs->UncheckedAt(k);
+ Int_t lab=ref->Label(), tlab=-1;
+ Float_t ptg=TMath::Sqrt(ref->Px()*ref->Px() + ref->Py()*ref->Py());
+
+ if (ptg<ptcutl) continue;
+ if (ptg>ptcuth) continue;
+
+ allselected++;
+
+ hgood->Fill(ptg);
+
+ AliESDtrack *esd=0;
+ Int_t cnt=0;
+ for (Int_t i=0; i<nentr; i++) {
+ AliESDtrack *t=event->GetTrack(i);
+ UInt_t status=t->GetStatus();
+
+ if ((status&AliESDtrack::kITSrefit)==0) continue;
+
+ Int_t lbl=t->GetLabel();
+ if (lab==TMath::Abs(lbl)) {
+ if (cnt==0) {esd=t; tlab=lbl;}
+ cnt++;
+ }
+ }
+ if (cnt==0) {
+ notf[nnotf++]=lab;
+ continue;
+ } else if (cnt>1){
+ mult[nmult]=lab;
+ numb[nmult]=cnt; nmult++;
+ }
+
+ if (lab==tlab) hfound->Fill(ptg);
+ else {
+ fake[nfake++]=lab;
+ hfake->Fill(ptg);
+ }
+
+ Double_t alpha=esd->GetAlpha(),xv,par[5];
+ esd->GetExternalParameters(xv,par);
+ Float_t phi=TMath::ASin(par[2]) + alpha;
+ if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
+ if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
+ Float_t lam=TMath::ATan(par[3]);
+ Float_t pt_1=TMath::Abs(par[4]);
+
+ Float_t phig=TMath::ATan2(ref->Py(),ref->Px());
+ hp->Fill((phi - phig)*1000.);
+
+ Float_t lamg=TMath::ATan2(ref->Pz(),ptg);
+ hl->Fill((lam - lamg)*1000.);
+
+ Float_t d,z; esd->GetImpactParameters(d,z);
+ hmpt->Fill(10000*d);
+ hz->Fill(10000*z);
+
+ hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
+
+ Float_t mom=1./(pt_1*TMath::Cos(lam));
+ Float_t dedx=esd->GetITSsignal();
+ hep->Fill(mom,dedx,1.);
+
+ Int_t pdg=(Int_t)ref->GetLength(); //this is particle's PDG !
+
+ if (TMath::Abs(pdg)==211) //pions
+ if (mom>0.4 && mom<0.5) he->Fill(dedx,1.);
- Double_t d=10000*track->GetD();
- hmpt->Fill(d);
+ }
- hptw->Fill(ptg,TMath::Abs(d));
+ cout<<"\nList of Not found tracks :\n";
+ for (k=0; k<nnotf; k++){
+ cout<<notf[k]<<"\t";
+ if ((k%9)==8) cout<<"\n";
+ }
+ cout<<"\n\nList of fake tracks :\n";
+ for (k=0; k<nfake; k++){
+ cout<<fake[k]<<"\t";
+ if ((k%9)==8) cout<<"\n";
+ }
+ cout<<"\n\nList of multiple found tracks :\n";
+ for (k=0; k<nmult; k++) {
+ cout<<"id. "<<mult[k]
+ <<" found - "<<numb[k]<<"times\n";
+ }
+ cout<<endl;
- Double_t z=10000*track->GetZ();
- hz->Fill(z);
+ cout<<"Number of found tracks : "<<nentr<<endl;
+ cout<<"Number of \"good\" tracks : "<<ngood<<endl;
-//if (TMath::Abs(gt[ngood].code)==11 && ptg>4.)
- hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
+ refs->Clear();
+ } //***** End of the loop over events
- }
+ delete event;
+ delete esdTree;
+ ef->Close();
+
+ delete itsTree;
+ refFile->Close();
- Stat_t ng=hgood->GetEntries(); cerr<<"Good tracks "<<ng<<endl;
- Stat_t nf=hfound->GetEntries();
- if (ng!=0)
- cerr<<"Integral efficiency is about "<<nf/ng*100.<<" %\n";
+ Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
+ if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
+ cout<<"Total number selected of \"good\" tracks ="<<allselected<<endl<<endl;
+ cout<<"Total number of found tracks ="<<allfound<<endl;
+ cout<<"Total number of \"good\" tracks ="<<allgood<<endl;
+ cout<<endl;
gStyle->SetOptStat(111110);
gStyle->SetOptFit(1);
TCanvas *c1=new TCanvas("c1","",0,0,700,850);
+ Int_t minc=33;
+
TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
- hp->SetFillColor(4); hp->SetXTitle("(mrad)"); hp->Fit("gaus"); c1->cd();
+ hp->SetFillColor(4); hp->SetXTitle("(mrad)");
+ if (hp->GetEntries()<minc) hp->Draw(); else hp->Fit("gaus"); c1->cd();
TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
- hl->SetXTitle("(mrad)"); hl->Fit("gaus"); c1->cd();
+ hl->SetXTitle("(mrad)");
+ if (hl->GetEntries()<minc) hl->Draw(); else hl->Fit("gaus"); c1->cd();
TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
- hpt->SetXTitle("(%)"); hpt->Fit("gaus"); c1->cd();
+ hpt->SetXTitle("(%)");
+ if (hpt->GetEntries()<minc) hpt->Draw(); else hpt->Fit("gaus"); c1->cd();
TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
- hmpt->SetXTitle("(micron)"); hmpt->Fit("gaus"); hz->Draw("same"); c1->cd();
- //hfound->Sumw2();
- //hptw->Sumw2();
- //hg->SetMaximum(333);
- //hg->SetYTitle("Impact Parameter Resolution (micron)");
- //hg->SetXTitle("Pt (GeV/c)");
- //hg->GetXaxis()->SetRange(0,10);
- //hg->Divide(hptw,hfound,1,1.);
- //hg->DrawCopy(); c1->cd();
+ hmpt->SetXTitle("(micron)");
+ if (hmpt->GetEntries()<minc) hmpt->Draw(); else hmpt->Fit("gaus");
+ hz->Draw("same"); c1->cd();
TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd();
hg->SetXTitle("Pt (GeV/c)");
hg->Draw();
- TLine *line1 = new TLine(pmin,1.0,pmax,1.0); line1->SetLineStyle(4);
+ TLine *line1 = new TLine(0.2,1.0,6.1,1.0); line1->SetLineStyle(4);
line1->Draw("same");
- TLine *line2 = new TLine(pmin,0.9,pmax,0.9); line2->SetLineStyle(4);
+ TLine *line2 = new TLine(0.2,0.9,6.1,0.9); line2->SetLineStyle(4);
line2->Draw("same");
hf->SetFillColor(1);
text->SetTextSize(0.05);
text->Draw();
+ TCanvas *c2=new TCanvas("c2","",320,32,530,590);
+ TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
+ p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10);
+ he->SetFillColor(2); he->SetFillStyle(3005);
+ he->SetXTitle("Arbitrary Units");
+ if (he->GetEntries()<minc) he->Draw(); else he->Fit("gaus"); c2->cd();
+
+ TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw();
+ p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
+ hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)");
+ hep->Draw(); c1->cd();
+
+ TFile fc("AliITSComparisonV2.root","RECREATE");
+ c1->Write();
+ c2->Write();
+ fc.Close();
+
+ gBenchmark->Stop("AliITSComparisonV2");
+ gBenchmark->Show("AliITSComparisonV2");
+
return 0;
}
-Int_t good_tracks(GoodTrack *gt, Int_t max) {
- if (gAlice) {delete gAlice; gAlice=0;}
- TFile *file=TFile::Open("galice.root");
- if (!file->IsOpen()) {cerr<<"Can't open galice.root !\n"; exit(4);}
- if (!(gAlice=(AliRun*)file->Get("gAlice"))) {
- cerr<<"gAlice have not been found on galice.root !\n";
- exit(5);
- }
- Int_t np=gAlice->GetEvent(0);
+Int_t GoodTracksITS(const Char_t *dir) {
+ if (gAlice) {
+ delete AliRunLoader::Instance();
+ delete gAlice;//if everything was OK here it is already NULL
+ gAlice = 0x0;
+ }
- Int_t *good=new Int_t[np];
- Int_t k;
- for (k=0; k<np; k++) good[k]=0;
+ Char_t fname[100];
+ sprintf(fname,"%s/galice.root",dir);
- AliITS *ITS=(AliITS*)gAlice->GetDetector("ITS");
- if (!ITS) {
- cerr<<"can't get ITS !\n"; exit(8);
- }
- AliITSgeom *geom=ITS->GetITSgeom();
- if (!geom) {
- cerr<<"cen't get ITS geometry !\n"; exit(9);
+ AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
+ if (!rl) {
+ ::Error("GoodTracksITS","Can't start session !");
+ return 1;
}
- TFile *cf=TFile::Open("AliITSclustersV2.root");
- if (!cf->IsOpen()){
- cerr<<"Can't open AliITSclustersV2.root !\n"; exit(6);
+ rl->LoadgAlice();
+ rl->LoadHeader();
+ rl->LoadKinematics();
+
+ AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
+ if (itsl == 0x0) {
+ ::Error("GoodTracksITS","Can not find the ITSLoader");
+ delete rl;
+ return 4;
}
- TTree *cTree=(TTree*)cf->Get("cTree");
- if (!cTree) {
- cerr<<"Can't get cTree !\n"; exit(7);
+ itsl->LoadRecPoints();
+
+
+ Int_t nev=rl->GetNumberOfEvents();
+ ::Info("GoodTracksITS","Number of events : %d\n",nev);
+
+ sprintf(fname,"%s/GoodTracksTPC.root",dir);
+ TFile *tpcFile=TFile::Open(fname);
+ if ((!tpcFile)||(!tpcFile->IsOpen())) {
+ ::Error("GoodTracksITS","Can't open the GoodTracksTPC.root !");
+ delete rl;
+ return 5;
}
- TBranch *branch=cTree->GetBranch("Clusters");
- if (!branch) {
- cerr<<"Can't get clusters branch !\n"; exit(8);
+ TClonesArray dum("AliTrackReference",1000), *tpcRefs=&dum;
+ TTree *tpcTree=(TTree*)tpcFile->Get("tpcTree");
+ if (!tpcTree) {
+ ::Error("GoodTracksITS","Can't get the TPC reference tree !");
+ delete rl;
+ return 6;
+ }
+ TBranch *tpcBranch=tpcTree->GetBranch("TPC");
+ if (!tpcBranch) {
+ ::Error("GoodTracksITS","Can't get the TPC reference branch !");
+ delete rl;
+ return 7;
}
- TClonesArray *clusters=new TClonesArray("AliITSclusterV2",10000);
- branch->SetAddress(&clusters);
-
- Int_t entr=(Int_t)cTree->GetEntries();
- for (k=0; k<entr; k++) {
- if (!cTree->GetEvent(k)) continue;
- Int_t lay,lad,det; geom->GetModuleId(k,lay,lad,det);
- if (lay<1 || lay>6) {
- cerr<<"wrong layer !\n"; exit(10);
+ tpcBranch->SetAddress(&tpcRefs);
+
+ sprintf(fname,"%s/GoodTracksITS.root",dir);
+ TFile *itsFile=TFile::Open(fname,"recreate");
+ TClonesArray dummy2("AliTrackReference",1000), *itsRefs=&dummy2;
+ TTree itsTree("itsTree","Tree with info about the reconstructable ITS tracks");
+ itsTree.Branch("ITS",&itsRefs);
+
+ //******** Loop over generated events
+ for (Int_t e=0; e<nev; e++) {
+ Int_t k;
+
+ rl->GetEvent(e); itsFile->cd();
+
+ Int_t np = rl->GetHeader()->GetNtrack();
+ cout<<"Event "<<e<<" Number of particles: "<<np<<endl;
+
+ //******** Fill the "good" masks
+ Int_t *good=new Int_t[np]; for (k=0; k<np; k++) good[k]=0;
+
+ TTree *cTree=itsl->TreeR();
+ if (!cTree) {
+ ::Error("GoodTracksITS","Can't get the cluster tree !");
+ delete rl;
+ return 8;
}
- Int_t ncl=clusters->GetEntriesFast();
- while (ncl--) {
- AliITSclusterV2 *pnt=(AliITSclusterV2*)clusters->UncheckedAt(ncl);
- Int_t l0=pnt->GetLabel(0);
- Int_t l1=pnt->GetLabel(1);
- Int_t l2=pnt->GetLabel(2);
- Int_t mask=1<<(lay-1);
- if (l0>=0) good[l0]|=mask;
- if (l1>=0) good[l1]|=mask;
- if (l2>=0) good[l2]|=mask;
+ TBranch *branch=cTree->GetBranch("ITSRecPoints");
+ if (!branch) {
+ ::Error("GoodTracksITS","Can't get the clusters branch !");
+ delete rl;
+ return 9;
}
- }
- clusters->Delete(); delete clusters;
- cf->Close();
+ TClonesArray dummy("AliITSRecPoint",10000), *clusters=&dummy;
+ branch->SetAddress(&clusters);
+
+ Int_t entr=(Int_t)cTree->GetEntries();
+ for (k=0; k<entr; k++) {
+ cTree->GetEvent(k);
+ Int_t ncl=clusters->GetEntriesFast(); if (ncl==0) continue;
+ while (ncl--) {
+ AliITSRecPoint *pnt=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
+
+ Int_t lay=pnt->GetLayer();
+ if (lay<0 || lay>5) {
+ ::Error("GoodTracksITS","Wrong layer !");
+ delete rl;
+ return 10;
+ }
+
+ Int_t l0=pnt->GetLabel(0);
+ if (l0>=np) {
+// cerr<<"Wrong label: "<<l0<<endl;
+ continue;
+ }
+ Int_t l1=pnt->GetLabel(1);
+ if (l1>=np) {
+// cerr<<"Wrong label: "<<l1<<endl;
+ continue;
+ }
+ Int_t l2=pnt->GetLabel(2);
+ if (l2>=np) {
+// cerr<<"Wrong label: "<<l2<<endl;
+ continue;
+ }
+ Int_t mask=1<<lay;
+ if (l0>=0) good[l0]|=mask;
+ if (l1>=0) good[l1]|=mask;
+ if (l2>=0) good[l2]|=mask;
+ }
+ clusters->Clear();
+ }
+
- ifstream in("good_tracks_tpc");
- if (!in) {
- cerr<<"can't get good_tracks_tpc !\n"; exit(11);
- }
- Int_t nt=0;
- Double_t px,py,pz,x,y,z;
- Int_t code,lab;
- while (in>>lab>>code>>px>>py>>pz>>x>>y>>z) {
- if (good[lab] != 0x3F) continue;
- TParticle *p = (TParticle*)gAlice->Particle(lab);
- gt[nt].lab=lab;
- gt[nt].code=p->GetPdgCode();
-//**** px py pz - in global coordinate system
- gt[nt].px=p->Px(); gt[nt].py=p->Py(); gt[nt].pz=p->Pz();
- gt[nt].x=gt[nt].y=gt[nt].z=0.;
- nt++;
- if (nt==max) {cerr<<"Too many good tracks !\n"; break;}
- }
+ //****** select tracks which are "good" enough
+ AliStack* stack = rl->Stack();
+
+ tpcTree->GetEvent(e);
+ Int_t nk=tpcRefs->GetEntriesFast();
+ Int_t nt=0;
+ for (k=0; k<nk; k++) {
+ AliTrackReference *tpcRef=(AliTrackReference *)tpcRefs->UncheckedAt(k);
+ Int_t lab=tpcRef->Label();
+ if (good[lab] != 0x3F) continue;
+ TParticle *p = (TParticle*)stack->Particle(lab);
+ if (p == 0x0) {
+ cerr<<"Can not get particle "<<lab<<endl;
+ continue;
+ }
+
+ AliTrackReference *ref=new((*itsRefs)[nt]) AliTrackReference(*tpcRef);
+ ref->SetMomentum(p->Px(),p->Py(),p->Pz());
+ ref->SetPosition(p->Vx(),p->Vy(),p->Vz());
+ nt++;
+ }
+ tpcRefs->Clear();
+
+ itsTree.Fill();
+ itsRefs->Clear();
- delete[] good;
+ delete[] good;
- delete gAlice; gAlice=0;
- file->Close();
+ } //*** end of the loop over generated events
- return nt;
+ itsTree.Write();
+ itsFile->Close();
+
+ delete tpcTree;
+ tpcFile->Close();
+
+ delete rl;
+ return 0;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff