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Reference Guide
candlehisto.C
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1/// \file
2/// \ingroup tutorial_hist
3/// \notebook
4/// Example showing how to combine the various candle plot options.
5///
6/// \macro_image
7/// \macro_code
8///
9/// \author Georg Troska
10
11void candlehisto()
12{
13 TCanvas *c1 = new TCanvas("c1", "Candle Presets", 800, 600);
14 c1->Divide(3, 2);
15
16 TRandom *rng = new TRandom();
17 TH2I *h1 = new TH2I("h1", "Sin", 18, 0, 360, 100, -1.5, 1.5);
18 h1->GetXaxis()->SetTitle("Deg");
19
20 float myRand;
21 for (int i = 0; i < 360; i+= 10) {
22 for (int j = 0; j < 100; j++) {
23 myRand = rng->Gaus(sin(i * 3.14 / 180), 0.2);
24 h1->Fill(i, myRand);
25 }
26 }
27
28 for (int i = 1; i < 7; i++) {
29 c1->cd(i);
30 TString title = TString::Format("CANDLEX%d", i);
31 TH2I *myhist = (TH2I*)h1->DrawCopy(title);
32 myhist->SetTitle(title);
33 }
34
35 TCanvas *c2 = new TCanvas("c2", "Violin Presets", 800, 300);
36 c2->Divide(2, 1);
37
38 for (int i = 1; i < 3; i++) {
39 c2->cd(i);
40 TString title = TString::Format("VIOLINX%d", i);
41 TH2I *myhist = (TH2I*)h1->DrawCopy(title);
42 myhist->SetFillColor(kGray + 2);
43 }
44
45 TCanvas *c3 = new TCanvas("c3", "Playing with candle and violin-options", 800, 600);
46 c3->Divide(3, 2);
47 TString myopt[6] = {"1000000", "2000000", "3000000", "1112111", "112111", "112111"};
48 for (int i = 0; i < 6; i++) {
49 c3->cd(i + 1);
50 TString title = TString::Format("candlex(%s)", myopt[i].Data());
51 TH2I *myhist = (TH2I*)h1->DrawCopy(title);
52 myhist->SetFillColor(kYellow);
53 if (i == 4) {
54 TH2I *myhist2 = (TH2I*)h1->DrawCopy("candlex(1000000) same");
55 myhist2->SetFillColor(kRed);
56 }
57 if (i == 5) {
58 myhist->SetBarWidth(0.2);
59 myhist->SetBarOffset(0.25);
60 TH2I *myhist2 = (TH2I*)h1->DrawCopy("candlex(2000000) same");
61 myhist2->SetFillColor(kRed);
62 myhist2->SetBarWidth(0.6);
63 myhist2->SetBarOffset(-0.5);
64 }
65 myhist->SetTitle(title);
66 }
67}
@ kGray
Definition: Rtypes.h:65
@ kRed
Definition: Rtypes.h:66
@ kYellow
Definition: Rtypes.h:66
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition: TAttFill.h:37
The Canvas class.
Definition: TCanvas.h:23
virtual void SetBarOffset(Float_t offset=0.25)
Set the bar offset as fraction of the bin width for drawing mode "B".
Definition: TH1.h:358
void SetTitle(const char *title) override
See GetStatOverflows for more information.
Definition: TH1.cxx:6708
TAxis * GetXaxis()
Get the behaviour adopted by the object about the statoverflows. See EStatOverflows for more informat...
Definition: TH1.h:319
virtual Int_t Fill(Double_t x)
Increment bin with abscissa X by 1.
Definition: TH1.cxx:3348
virtual TH1 * DrawCopy(Option_t *option="", const char *name_postfix="_copy") const
Copy this histogram and Draw in the current pad.
Definition: TH1.cxx:3117
virtual void SetBarWidth(Float_t width=0.5)
Set the width of bars as fraction of the bin width for drawing mode "B".
Definition: TH1.h:359
2-D histogram with an int per channel (see TH1 documentation)}
Definition: TH2.h:216
virtual void SetTitle(const char *title="")
Set the title of the TNamed.
Definition: TNamed.cxx:164
This is the base class for the ROOT Random number generators.
Definition: TRandom.h:27
virtual Double_t Gaus(Double_t mean=0, Double_t sigma=1)
Samples a random number from the standard Normal (Gaussian) Distribution with the given mean and sigm...
Definition: TRandom.cxx:274
Basic string class.
Definition: TString.h:136
static TString Format(const char *fmt,...)
Static method which formats a string using a printf style format descriptor and return a TString.
Definition: TString.cxx:2336
RVec< PromoteType< T > > sin(const RVec< T > &v)
Definition: RVec.hxx:1758
return c1
Definition: legend1.C:41
TH1F * h1
Definition: legend1.C:5
return c2
Definition: legend2.C:14
return c3
Definition: legend3.C:15