+/* $Id$ */
+
#include "AlidNdEtaAnalysisSelector.h"
#include <TStyle.h>
#include <TSystem.h>
#include <TCanvas.h>
#include <TVector3.h>
+#include <TH2F.h>
+#include <TChain.h>
+#include <TFile.h>
#include <AliLog.h>
#include <AliGenEventHeader.h>
-#include <AliTracker.h>
+#include <AliHeader.h>
-#include "../esdTrackCuts/AliESDtrackCuts.h"
-#include "dNdEtaCorrection.h"
#include "dNdEtaAnalysis.h"
ClassImp(AlidNdEtaAnalysisSelector)
-AlidNdEtaAnalysisSelector::AlidNdEtaAnalysisSelector(TTree *) :
+AlidNdEtaAnalysisSelector::AlidNdEtaAnalysisSelector() :
AliSelector(),
- fEsdTrackCuts(0),
- fdNdEtaAnalysis(0),
- fdNdEtaCorrection(0),
- fdNdEtaAnalysisFinal(0)
+ fdNdEtaAnalysis(0)
{
//
// Constructor. Initialization of pointers
AliSelector::SlaveBegin(tree);
- fdNdEtaAnalysis = new dNdEtaAnalysis("dndeta");
-
- if (fChain)
- {
- fEsdTrackCuts = dynamic_cast<AliESDtrackCuts*> (fChain->GetUserInfo()->FindObject("AliESDtrackCuts"));
- fdNdEtaCorrection = dynamic_cast<dNdEtaCorrection*> (fChain->GetUserInfo()->FindObject("dNdEtaCorrection"));
- }
-
- if (!fEsdTrackCuts)
- AliDebug(AliLog::kError, "ERROR: Could not read EsdTrackCuts from user info.");
-
- if (!fEsdTrackCuts)
- AliDebug(AliLog::kError, "ERROR: Could not read dNdEtaCorrection from user info.");
-
- AliLog::SetClassDebugLevel("AliESDtrackCuts", 1);
-}
-
-Bool_t AlidNdEtaAnalysisSelector::Process(Long64_t entry)
-{
- // The Process() function is called for each entry in the tree (or possibly
- // keyed object in the case of PROOF) to be processed. The entry argument
- // specifies which entry in the currently loaded tree is to be processed.
- // It can be passed to either TTree::GetEntry() or TBranch::GetEntry()
- // to read either all or the required parts of the data. When processing
- // keyed objects with PROOF, the object is already loaded and is available
- // via the fObject pointer.
- //
- // This function should contain the "body" of the analysis. It can contain
- // simple or elaborate selection criteria, run algorithms on the data
- // of the event and typically fill histograms.
-
- // WARNING when a selector is used with a TChain, you must use
- // the pointer to the current TTree to call GetEntry(entry).
- // The entry is always the local entry number in the current tree.
- // Assuming that fChain is the pointer to the TChain being processed,
- // use fChain->GetTree()->GetEntry(entry).
-
- if (AliSelector::Process(entry) == kFALSE)
- return kFALSE;
-
- // Check prerequisites
- if (!fESD || !fEsdTrackCuts)
- return kFALSE;
-
- // ########################################################
- // get the EDS vertex
- const AliESDVertex* vtxESD = fESD->GetVertex();
-
- // the vertex should be reconstructed
- if (strcmp(vtxESD->GetName(),"default")==0)
- return kTRUE;
-
- Double_t vtx_res[3];
- vtx_res[0] = vtxESD->GetXRes();
- vtx_res[1] = vtxESD->GetYRes();
- vtx_res[2] = vtxESD->GetZRes();
-
- // the resolution should be reasonable???
- if (vtx_res[2]==0 || vtx_res[2]>0.1)
- return kTRUE;
-
- Double_t vtx[3];
- vtxESD->GetXYZ(vtx);
-
- // ########################################################
- // loop over esd tracks
- Int_t nTracks = fESD->GetNumberOfTracks();
- for (Int_t t=0; t<nTracks; t++)
- {
- AliESDtrack* esdTrack = fESD->GetTrack(t);
- if (!esdTrack)
- {
- AliDebug(AliLog::kError, Form("ERROR: Could not retrieve track %d.", t));
- continue;
- }
-
- // cut the esd track?
- if (!fEsdTrackCuts->AcceptTrack(esdTrack))
- continue;
-
- Double_t p[3];
- esdTrack->GetConstrainedPxPyPz(p); // ### TODO or GetInnerPxPyPy / GetOuterPxPyPy
- TVector3 vector(p);
-
- Float_t theta = vector.Theta();
- Float_t eta = -TMath::Log(TMath::Tan(theta/2.));
-
- Float_t correction = fdNdEtaCorrection->GetCorrection(vtx[2], eta);
-
- fdNdEtaAnalysis->FillTrack(vtx[2], eta, correction);
-
- } // end of track loop
-
- // for event count per vertex
- fdNdEtaAnalysis->FillEvent(vtx[2]);
-
- return kTRUE;
+ fdNdEtaAnalysis = new dNdEtaAnalysis("dndeta", "dndeta");
}
void AlidNdEtaAnalysisSelector::SlaveTerminate()
return;
}
- fOutput->Add(fdNdEtaAnalysis->GetEtaVsVtxHistogram());
- fOutput->Add(fdNdEtaAnalysis->GetEtaVsVtxUncorrectedHistogram());
- fOutput->Add(fdNdEtaAnalysis->GetVtxHistogram());
-
- fdNdEtaAnalysis->GetVtxHistogram()->Print();
- fOutput->Print();
+ fOutput->Add(fdNdEtaAnalysis);
}
void AlidNdEtaAnalysisSelector::Terminate()
AliSelector::Terminate();
- TH2F* etaVsVtxHistogram = dynamic_cast<TH2F*> (fOutput->FindObject("eta_vs_vtx"));
- TH2F* etaVsVtxUncorrectedHistogram = dynamic_cast<TH2F*> (fOutput->FindObject("eta_vs_vtx_uncorrected"));
- TH1D* vtxHistogram = dynamic_cast<TH1D*> (fOutput->FindObject("vtx"));
+ fdNdEtaAnalysis = dynamic_cast<dNdEtaAnalysis*> (fOutput->FindObject("dndeta"));
- if (!etaVsVtxHistogram || !vtxHistogram || !etaVsVtxUncorrectedHistogram)
+ if (!fdNdEtaAnalysis)
{
- AliDebug(AliLog::kError, Form("ERROR: Histograms not available %p %p %p", (void*) etaVsVtxHistogram, (void*) etaVsVtxUncorrectedHistogram, (void*) vtxHistogram));
+ AliDebug(AliLog::kError, Form("ERROR: Histograms not available %p", (void*) fdNdEtaAnalysis));
return;
}
- fdNdEtaAnalysisFinal = new dNdEtaAnalysis("dNdEtaResult");
-
- fdNdEtaAnalysisFinal->SetEtaVsVtxHistogram(etaVsVtxHistogram);
- fdNdEtaAnalysisFinal->SetEtaVsVtxUncorrectedHistogram(etaVsVtxUncorrectedHistogram);
- fdNdEtaAnalysisFinal->SetVtxHistogram(vtxHistogram);
-
- fdNdEtaAnalysisFinal->Finish();
-
TFile* fout = new TFile("out.root","RECREATE");
-
- fEsdTrackCuts->SaveHistograms("esd_tracks_cuts");
- fdNdEtaCorrection->SaveHistograms();
- fdNdEtaAnalysisFinal->SaveHistograms();
-
+ WriteObjects();
fout->Write();
fout->Close();
+}
+
+void AlidNdEtaAnalysisSelector::WriteObjects()
+{
+ // Write objects to output file
+ // this is an extra function to be overloaded...
+ //
- fdNdEtaAnalysisFinal->DrawHistograms();
+ fdNdEtaAnalysis->SaveHistograms();
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff