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Commit | Line | Data |
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f7336fa3 | 1 | void slowClusterAna() { |
2 | ||
3 | ///////////////////////////////////////////////////////////////////////// | |
4 | // | |
5 | // Example macro for the analysis of the TRD cluster | |
6 | // | |
7 | ///////////////////////////////////////////////////////////////////////// | |
8 | ||
9 | // Dynamically link some shared libs | |
10 | if (gClassTable->GetID("AliRun") < 0) { | |
11 | gROOT->LoadMacro("loadlibs.C"); | |
12 | loadlibs(); | |
13 | } | |
14 | ||
15 | // Input file name | |
411a9c2c | 16 | Char_t *alifile = "galice.root"; |
f7336fa3 | 17 | |
18 | // Event number | |
19 | Int_t nEvent = 0; | |
20 | ||
21 | // Define the histograms | |
22 | TH1F *hEnergy = new TH1F("hEnergy","Cluster energy",100,0.0,1000.0); | |
23 | ||
24 | // Connect the AliRoot file containing Geometry, Kine, Hits, and Digits | |
25 | TFile *gafl = (TFile*) gROOT->GetListOfFiles()->FindObject(alifile); | |
26 | if (!gafl) { | |
27 | cout << "Open the ALIROOT-file " << alifile << endl; | |
28 | gafl = new TFile(alifile); | |
29 | } | |
30 | else { | |
31 | cout << alifile << " is already open" << endl; | |
32 | } | |
33 | ||
34 | // Get AliRun object from file or create it if not on file | |
35 | gAlice = (AliRun*) gafl->Get("gAlice"); | |
36 | if (gAlice) | |
37 | cout << "AliRun object found on file" << endl; | |
38 | else | |
39 | gAlice = new AliRun("gAlice","Alice test program"); | |
40 | ||
41 | // Import the Trees for the event nEvent in the file | |
42 | Int_t nparticles = gAlice->GetEvent(nEvent); | |
43 | if (nparticles <= 0) break; | |
44 | ||
45 | // Get the pointer to the hit-tree | |
411a9c2c | 46 | Char_t treeName[14]; |
47 | sprintf(treeName,"TRDrecPoints%d", nEvent); | |
48 | TTree *RecTree = gafl->Get(treeName); | |
f7336fa3 | 49 | RecTree->Print(); |
50 | // Get the pointer to the detector classes | |
51 | AliTRDv1 *TRD = (AliTRDv1*) gAlice->GetDetector("TRD"); | |
52 | // Get the geometry | |
53 | AliTRDgeometry *TRDgeometry = TRD->GetGeometry(); | |
54 | // Get the pointer to the hit container | |
6f1e466d | 55 | TObjArray *RecPointArray = TRD->RecPoints(); |
f7336fa3 | 56 | // Set the branch address |
57 | RecTree->GetBranch("TRDrecPoints")->SetAddress(&RecPointArray); | |
58 | ||
59 | Int_t nEntries = RecTree->GetEntries(); | |
6f1e466d | 60 | cout << "nEntries = " << nEntries << endl; |
f7336fa3 | 61 | |
62 | // Loop through all entries in the tree | |
63 | Int_t nbytes; | |
64 | for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { | |
65 | ||
f7336fa3 | 66 | // Import the tree |
67 | nbytes += RecTree->GetEvent(iEntry); | |
68 | ||
6f1e466d | 69 | // Get the number of points in the detector |
f7336fa3 | 70 | Int_t nRecPoint = RecPointArray->GetEntriesFast(); |
f7336fa3 | 71 | |
72 | // Loop through all TRD digits | |
73 | for (Int_t iRecPoint = 0; iRecPoint < nRecPoint; iRecPoint++) { | |
74 | ||
75 | // Get the information for this digit | |
76 | AliTRDrecPoint *RecPoint = (AliTRDrecPoint *) RecPointArray->UncheckedAt(iRecPoint); | |
77 | Int_t detector = RecPoint->GetDetector(); | |
78 | Int_t sector = TRDgeometry->GetSector(detector); | |
79 | Int_t plane = TRDgeometry->GetPlane(detector); | |
80 | Int_t chamber = TRDgeometry->GetChamber(detector); | |
81 | Int_t energy = RecPoint->GetEnergy(); | |
82 | TVector3 pos; | |
83 | RecPoint->GetLocalPosition(pos); | |
84 | ||
85 | hEnergy->Fill((Float_t) energy); | |
86 | ||
87 | } | |
88 | ||
89 | } | |
90 | ||
91 | TCanvas *c1 = new TCanvas("c1","Cluster",50,50,600,400); | |
92 | hEnergy->Draw(); | |
93 | ||
94 | } |