BmnResultsZDC.C

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using namespace std;
 
void BmnResultsZDC(char* fname = "../raw/bmn_run0871_digi.root")
{
    gROOT->LoadMacro("$VMCWORKDIR/macro/run/bmnloadlibs.C");
    bmnloadlibs();
    /////////////////////////////////////////////////////////////////////////////////////
    TChain* bmnTree = new TChain("cbmsim");
    bmnTree->Add(fname);
 
    TClonesArray* zdcDigits;
    bmnTree->SetBranchAddress("ZDC", &zdcDigits);
 
    Int_t startEvent = 0;
    Int_t nEvents = bmnTree->GetEntries();
 
    gStyle->SetOptFit(111);
 
    char name[64], title[64];
    TH1F* hamp = 0;
    sprintf(name, "hamp");
    sprintf(title, "Module amplitude");
    hamp = new TH1F(name, title, 500, 0, 1000);
    TH1F* hsum = new TH1F("hsum", "Sum of amplitudes", 1000, 0, 5000);
    TH2F* hpro = new TH2F("hpro", "Cluster profile", 22, -76 * 11, 76 * 11, 14, -76 * 7, 76 * 7);
    /////////////////////////////////////////////////////////////////////////////////////
 
    for (Int_t iEv = startEvent; iEv < startEvent + nEvents; iEv++) {
        bmnTree->GetEntry(iEv);
 
        if (iEv % 10000 == 0)
            cout << "Event: " << iEv << "/" << startEvent + nEvents << endl;
 
        Float_t sum = 0.;
 
        int xbin = 0;
        for (Int_t iDig = 0; iDig < zdcDigits->GetEntriesFast(); ++iDig) {
            BmnZDCDigit* digit = (BmnZDCDigit*)zdcDigits->At(iDig);
            if (digit == NULL)
                continue;
            Short_t chan = digit->GetChannel();
            Float_t ampl = digit->GetAmp();
            Float_t x = digit->GetX();
            Float_t y = digit->GetY();
            if (ampl > 0.)
                hamp->Fill(ampl);
            if (digit->GetSize() == 1)
                hpro->Fill(x, y, ampl);
            else   // equalization for BIG modules
            {
                xbin = hpro->FindBin(x + 5., y + 5.);
                hpro->SetBinContent(xbin, ampl / 4.);
                xbin = hpro->FindBin(x + 5., y - 5.);
                hpro->SetBinContent(xbin, ampl / 4.);
                xbin = hpro->FindBin(x - 5., y + 5.);
                hpro->SetBinContent(xbin, ampl / 4.);
                xbin = hpro->FindBin(x - 5., y - 5.);
                hpro->SetBinContent(xbin, ampl / 4.);
            }
            sum += ampl;
        }
        if (sum > 0.)
            hsum->Fill(sum);
    }
    /////////////////////////////////////////////////////////////////////////////////////
    TCanvas* c = new TCanvas("c", "Channel Amplitudes", 700, 900);
    c->cd();
    c->Divide(1, 1);
    c->cd(1);
    hamp->Draw();
    gPad->AddExec("exsel", "select_hist()");
 
    TCanvas* c1 = new TCanvas("c1", "Sum of Channel Amplitudes", 700, 900);
    c1->cd();
    c1->Divide(1, 1);
    c1->cd(1);
    hsum->Draw();
 
    TCanvas* c2 = new TCanvas("c2", "Average Shape", 700, 900);
    c2->cd();
    c2->Divide(1, 1);
    c2->cd(1);
    hpro->Draw();
}
 
void select_hist()
{
    // example of macro called when a mouse event occurs in a pad.
    //  Example:
    //  Root > TFile f("hsimple.root");
    //  Root > hpxpy.Draw();
    //  Root > c1.AddExec("exsel","select_hist()");
    //  When moving the mouse in the canvas, a second canvas shows the
    //  projection along X of the bin corresponding to the Y position
    //  of the mouse. The resulting histogram is fitted with a gaussian.
    //  A "dynamic" line shows the current bin position in Y.
    //  This more elaborated example can be used as a starting point
    //  to develop more powerful interactive applications exploiting CINT
    //  as a development engine.
    // Author: Rene Brun
 
    int event = gPad->GetEvent();
    if (event != 11)
        return;
 
    TObject* select = gPad->GetSelected();
    if (!select)
        return;
    if (!(select->InheritsFrom("TH1")))
        return;
 
    // create or set the new canvas c2
    TCanvas* csingle = 0;
    if ((csingle = (TCanvas*)gROOT->GetListOfCanvases()->FindObject("csingle")))
        ;
    else
        csingle = new TCanvas("csingle");
    csingle->cd();
 
    // draw slice corresponding to mouse position
    if (!(select->InheritsFrom("TH1F"))) {
        TH1F* h = (TH1F*)select;
        h->Draw();
    } else if (!(select->InheritsFrom("TH2F"))) {
        TH2F* h = (TH2F*)select;
        h->Draw();
    } else if (!(select->InheritsFrom("TProfile"))) {
        TProfile* h = (TProfile*)select;
        h->Draw();
    } else if (!(select->InheritsFrom("TH1D"))) {
        TH1D* h = (TH1D*)select;
        h->Draw();
    } else if (!(select->InheritsFrom("TH2D"))) {
        TH2D* h = (TH2D*)select;
        h->Draw();
    } else if (!(select->InheritsFrom("TProfile2D"))) {
        TProfile2D* h = (TProfile2D*)select;
        h->Draw();
    } else
        return;
    csingle->Update();
}