doc/v616/Smoothing_8C.html

void Smoothing() {

   Int_t i;

   const Int_t nbins = 1024;

   Double_t xmin  = 0;

   Double_t xmax  = nbins;

   Double_t source[nbins];

   gROOT->ForceStyle();


   TString dir  = gROOT->GetTutorialDir();

   TString file = dir+"/spectrum/TSpectrum.root";

   TFile *f     = new TFile(file.Data());

   TH1F *h = (TH1F*) f->Get("back1");

   h->SetTitle("Smoothed spectrum for m=3");


   for (i = 0; i < nbins; i++) source[i]=h->GetBinContent(i + 1);

   h->SetAxisRange(1,1024);

   h->Draw("L");


   TSpectrum *s = new TSpectrum();


   TH1F *smooth = new TH1F("smooth","smooth",nbins,0.,nbins);

   smooth->SetLineColor(kRed);


   s->SmoothMarkov(source,1024,3);  //3, 7, 10

   for (i = 0; i < nbins; i++) smooth->SetBinContent(i + 1,source[i]);

   smooth->Draw("L SAME");

}

f
#define f(i)
Definition: RSha256.hxx:104

h
#define h(i)
Definition: RSha256.hxx:106

Int_t
int Int_t
Definition: RtypesCore.h:41

Double_t
double Double_t
Definition: RtypesCore.h:55

kRed
@ kRed
Definition: Rtypes.h:63

xmin
float xmin
Definition: THbookFile.cxx:93

xmax
float xmax
Definition: THbookFile.cxx:93

gROOT
#define gROOT
Definition: TROOT.h:410

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

TFile
A ROOT file is a suite of consecutive data records (TKey instances) with a well defined format.
Definition: TFile.h:48

TH1F
1-D histogram with a float per channel (see TH1 documentation)}
Definition: TH1.h:571

TH1::SetBinContent
virtual void SetBinContent(Int_t bin, Double_t content)
Set bin content see convention for numbering bins in TH1::GetBin In case the bin number is greater th...
Definition: TH1.cxx:8542

TH1::Draw
virtual void Draw(Option_t *option="")
Draw this histogram with options.
Definition: TH1.cxx:2974

TSpectrum
Advanced Spectra Processing.
Definition: TSpectrum.h:18

TString
Basic string class.
Definition: TString.h:131

TGeoUnit::s
static constexpr double s
Definition: TGeoSystemOfUnits.h:162

file
Definition: file.py:1