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Reference Guide
candledecay.C File Reference

Detailed Description

View in nbviewer Open in SWAN Candle Decay, illustrate a time development of a certain value.

void candledecay()
{
auto c1 = new TCanvas("c1","Candle Decay",800,600);
c1->Divide(2,1);
auto rng = new TRandom();
auto h1 = new TH2I("h1","Decay",1000,0,1000,20,0,20);
float myRand;
for (int i = 0; i < 19; i++) {
for (int j = 0; j < 1000000; j++) {
myRand = rng->Gaus(350+i*8,20+2*i);
h1->Fill(myRand,i);
}
}
h1->GetYaxis()->SetTitle("time");
h1->GetXaxis()->SetTitle("probability density");
c1->cd(1);
h1->Draw("violiny(112000000)");
c1->cd(2);
auto h2 = (TH2I*)h1->Clone("h2");
h2->SetBarWidth(0.8);
h2->DrawCopy("candley2");
}
@ kGray
Definition: Rtypes.h:65
@ kBlue
Definition: Rtypes.h:66
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition: TAttFill.h:37
virtual void SetFillStyle(Style_t fstyle)
Set the fill area style.
Definition: TAttFill.h:39
virtual void SetLineColor(Color_t lcolor)
Set the line color.
Definition: TAttLine.h:40
The Canvas class.
Definition: TCanvas.h:23
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
TAxis * GetYaxis()
Definition: TH1.h:320
void Draw(Option_t *option="") override
Draw this histogram with options.
Definition: TH1.cxx:3070
TObject * Clone(const char *newname="") const override
Make a complete copy of the underlying object.
Definition: TH1.cxx:2737
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
return c1
Definition: legend1.C:41
TH1F * h1
Definition: legend1.C:5
Author
Georg Troska

Definition in file candledecay.C.