doc/v624/candledecay_8C.html

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->SetBarWidth(3);

   h1->SetFillStyle(0);

   h1->SetFillColor(kGray);

   h1->SetLineColor(kBlue);

   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
@ kGray
Definition Rtypes.h:65

kBlue
@ kBlue
Definition Rtypes.h:66

TAttFill::SetFillColor
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition TAttFill.h:37

TAttFill::SetFillStyle
virtual void SetFillStyle(Style_t fstyle)
Set the fill area style.
Definition TAttFill.h:39

TAttLine::SetLineColor
virtual void SetLineColor(Color_t lcolor)
Set the line color.
Definition TAttLine.h:40

TCanvas
The Canvas class.
Definition TCanvas.h:23

TH1::GetXaxis
TAxis * GetXaxis()
Get the behaviour adopted by the object about the statoverflows. See EStatOverflows for more informat...
Definition TH1.h:320

TH1::Clone
TObject * Clone(const char *newname=0) const
Make a complete copy of the underlying object.
Definition TH1.cxx:2740

TH1::Fill
virtual Int_t Fill(Double_t x)
Increment bin with abscissa X by 1.
Definition TH1.cxx:3350

TH1::GetYaxis
TAxis * GetYaxis()
Definition TH1.h:321

TH1::Draw
virtual void Draw(Option_t *option="")
Draw this histogram with options.
Definition TH1.cxx:3073

TH1::SetBarWidth
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:360

TH2I
2-D histogram with an int per channel (see TH1 documentation)}
Definition TH2.h:212

TNamed::SetTitle
virtual void SetTitle(const char *title="")
Set the title of the TNamed.
Definition TNamed.cxx:164

TRandom
This is the base class for the ROOT Random number generators.
Definition TRandom.h:27

c1
return c1
Definition legend1.C:41

h1
TH1F * h1
Definition legend1.C:5