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Reference Guide
ProofFriends.C
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1/// \file
2/// \ingroup tutorial_ProofFriends
3///
4/// Selector to process tree friends
5///
6/// \macro_code
7///
8/// \author Gerardo Ganis (gerardo.ganis@cern.ch)
9
10#define ProofFriends_cxx
11
12#include "ProofFriends.h"
13#include "TCanvas.h"
14#include "TColor.h"
15#include "TH1F.h"
16#include "TH2F.h"
17#include "TList.h"
18#include "TMath.h"
19#include "TString.h"
20#include "TStyle.h"
21
22//_____________________________________________________________________________
23ProofFriends::ProofFriends()
24{
25 // Constructor
26
27 fXY = 0;
28 fZ = 0;
29 fR = 0;
30 fRZ = 0;
31 fPlot = kTRUE;
32 fDoFriends = kTRUE;
33}
34
35//_____________________________________________________________________________
36void ProofFriends::Begin(TTree * /*tree*/)
37{
38 // The Begin() function is called at the start of the query.
39 // When running with PROOF Begin() is only called on the client.
40 // The tree argument is deprecated (on PROOF 0 is passed).
41
42 TString option = GetOption();
43
44 TNamed *out = (TNamed *) fInput->FindObject("PROOF_DONT_PLOT");
45 if (out) fPlot = kFALSE;
46 out = (TNamed *) fInput->FindObject("PROOF_NO_FRIENDS");
47 if (out) fDoFriends = kFALSE;
48}
49
50//_____________________________________________________________________________
51void ProofFriends::SlaveBegin(TTree * /*tree*/)
52{
53 // The SlaveBegin() function is called after the Begin() function.
54 // When running with PROOF SlaveBegin() is called on each slave server.
55 // The tree argument is deprecated (on PROOF 0 is passed).
56
57 TString option = GetOption();
58
59 TNamed *out = (TNamed *) fInput->FindObject("PROOF_NO_FRIENDS");
60 if (out) fDoFriends = kFALSE;
61
62 // Histograms
63 fXY = new TH2F("histo1", "y:x", 50, 5., 15., 50, 10., 30.);
64 fZ = new TH1F("histo2", "z , sqrt(dx*dx+dy*dy) < 1", 50, 0., 5.);
65 fZ->SetFillColor(kBlue);
66 fOutput->Add(fXY);
67 fOutput->Add(fZ);
68 if (fDoFriends) {
69 fR = new TH1F("histo3", "Tfrnd.r , sqrt(dx*dx+dy*dy) < 1, z < 1", 50, 5., 15.);
70 fRZ = new TH2F("histo4", "Tfrnd.r:z , sqrt(dx*dx+dy*dy) < 1, z < 1", 50, 0., 1., 50, 5., 15.);
71 fR->SetFillColor(kRed);
72 fOutput->Add(fR);
73 fOutput->Add(fRZ);
74 }
75}
76
77//_____________________________________________________________________________
78Bool_t ProofFriends::Process(Long64_t entry)
79{
80 // The Process() function is called for each entry in the tree (or possibly
81 // keyed object in the case of PROOF) to be processed. The entry argument
82 // specifies which entry in the currently loaded tree is to be processed.
83 // It can be passed to either ProofFriends::GetEntry() or TBranch::GetEntry()
84 // to read either all or the required parts of the data. When processing
85 // keyed objects with PROOF, the object is already loaded and is available
86 // via the fObject pointer.
87 //
88 // This function should contain the "body" of the analysis. It can contain
89 // simple or elaborate selection criteria, run algorithms on the data
90 // of the event and typically fill histograms.
91 //
92 // The processing can be stopped by calling Abort().
93 //
94 // Use fStatus to set the return value of TTree::Process().
95 //
96 // The return value is currently not used.
97
98 // Read x and y, fill and apply cut
99 b_x->GetEntry(entry);
100 b_y->GetEntry(entry);
101 fXY->Fill(x, y, 1.);
102 Double_t dx = x-10.;
103 Double_t dy = y-20.;
104 Double_t xpy = TMath::Sqrt(dx*dx + dy*dy);
105 if (xpy > 1.) return kFALSE;
106
107 // Read z, fill and apply cut
108 b_z->GetEntry(entry);
109 fZ->Fill(z, 1.);
110 if (z > 1.) return kFALSE;
111
112 // Read r and fill
113 if (fDoFriends) {
114 b_r->GetEntry(entry);
115 fR->Fill(r, 1.);
116 fRZ->Fill(z, r, 1.);
117 }
118
119 return kTRUE;
120}
121
122//_____________________________________________________________________________
123void ProofFriends::SlaveTerminate()
124{
125 // The SlaveTerminate() function is called after all entries or objects
126 // have been processed. When running with PROOF SlaveTerminate() is called
127 // on each slave server.
128
129}
130
131//_____________________________________________________________________________
132void ProofFriends::Terminate()
133{
134 // The Terminate() function is the last function to be called during
135 // a query. It always runs on the client, it can be used to present
136 // the results graphically or save the results to file.
137
138 if (!fPlot) return;
139
140 gStyle->SetOptStat(1110);
141 // Create canvas
142 TCanvas *c1 = new TCanvas("c1","Proof ProofFriends canvas",200,10,700,700);
143 // Overall background
144 Int_t cb = TColor::GetColor("#ccffff");
145 c1->SetFillColor(cb);
146 c1->SetBorderMode(0);
147 // 4 pads
148 c1->Divide(2, 2);
149
150 Int_t cf = TColor::GetColor("#99cccc");
151 TPad *p1 = 0;
152 if ((fXY = dynamic_cast<TH2F *>(fOutput->FindObject("histo1")))) {
153 p1 = (TPad *) c1->cd(1);
154 p1->SetBorderMode(0);
155 p1->SetFrameFillColor(cf);
156 fXY->GetXaxis()->SetTitle("x");
157 fXY->GetYaxis()->SetTitle("y");
158 fXY->Draw("");
159 }
160
161 if ((fZ = dynamic_cast<TH1F *>(fOutput->FindObject("histo2")))) {
162 p1 = (TPad *) c1->cd(2);
163 p1->SetBorderMode(0);
164 p1->SetFrameFillColor(cf);
165 fZ->GetXaxis()->SetTitle("z");
166 fZ->GetYaxis()->SetTitle("N / 0.1");
167 fZ->Draw("");
168 }
169
170 if (fDoFriends) {
171
172 if ((fR = dynamic_cast<TH1F *>(fOutput->FindObject("histo3")))) {
173 p1 = (TPad *) c1->cd(3);
174 p1->SetBorderMode(0);
175 p1->SetFrameFillColor(cf);
176 fR->GetXaxis()->SetTitle("Tfrnd.r");
177 fR->GetYaxis()->SetTitle("N / 0.2");
178 fR->Draw();
179 }
180
181 if ((fRZ = dynamic_cast<TH2F *>(fOutput->FindObject("histo4")))) {
182 p1 = (TPad *) c1->cd(4);
183 p1->SetBorderMode(0);
184 p1->SetFrameFillColor(cf);
185 fRZ->GetXaxis()->SetTitle("z");
186 fRZ->GetXaxis()->CenterTitle(1);
187 fRZ->GetXaxis()->SetTitleOffset(1.5);
188 fRZ->GetYaxis()->SetTitle("Tfrnd.r");
189 fRZ->GetYaxis()->CenterTitle(1);
190 fRZ->GetYaxis()->SetTitleOffset(1.75);
191 fRZ->GetZaxis()->SetTitle("N / 0.1 / 0.2");
192 fRZ->GetZaxis()->SetTitleOffset(1.25);
193 fRZ->Draw("lego");
194 }
195
196 }
197
198 // Final update
199 c1->cd();
200 c1->Update();
201}
ROOT::R::TRInterface & r
Definition: Object.C:4
Selector to process tree friends.
int Int_t
Definition: RtypesCore.h:41
const Bool_t kFALSE
Definition: RtypesCore.h:88
bool Bool_t
Definition: RtypesCore.h:59
double Double_t
Definition: RtypesCore.h:55
long long Long64_t
Definition: RtypesCore.h:69
const Bool_t kTRUE
Definition: RtypesCore.h:87
@ kRed
Definition: Rtypes.h:64
@ kBlue
Definition: Rtypes.h:64
R__EXTERN TStyle * gStyle
Definition: TStyle.h:406
void SetFrameFillColor(Color_t color=1)
Definition: TAttPad.h:73
The Canvas class.
Definition: TCanvas.h:31
static Int_t GetColor(const char *hexcolor)
Static method returning color number for color specified by hex color string of form: "#rrggbb",...
Definition: TColor.cxx:1764
1-D histogram with a float per channel (see TH1 documentation)}
Definition: TH1.h:571
2-D histogram with a float per channel (see TH1 documentation)}
Definition: TH2.h:248
The TNamed class is the base class for all named ROOT classes.
Definition: TNamed.h:29
virtual TObject * FindObject(const char *name) const
Must be redefined in derived classes.
Definition: TObject.cxx:321
The most important graphics class in the ROOT system.
Definition: TPad.h:29
virtual void SetBorderMode(Short_t bordermode)
Definition: TPad.h:318
Basic string class.
Definition: TString.h:131
void SetOptStat(Int_t stat=1)
The type of information printed in the histogram statistics box can be selected via the parameter mod...
Definition: TStyle.cxx:1444
A TTree represents a columnar dataset.
Definition: TTree.h:71
return c1
Definition: legend1.C:41
Double_t y[n]
Definition: legend1.C:17
Double_t x[n]
Definition: legend1.C:17
void Begin(Int_t type)
Double_t Sqrt(Double_t x)
Definition: TMath.h:679