doc/v632/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:45

Double_t
double Double_t
Definition RtypesCore.h:59

kRed
@ kRed
Definition Rtypes.h:66

xmin
float xmin
Definition THbookFile.cxx:95

xmax
float xmax
Definition THbookFile.cxx:95

gROOT
#define gROOT
Definition TROOT.h:406

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

TFile
A ROOT file is an on-disk file, usually with extension .root, that stores objects in a file-system-li...
Definition TFile.h:53

TH1F
1-D histogram with a float per channel (see TH1 documentation)
Definition TH1.h:621

TH1::SetTitle
void SetTitle(const char *title) override
Change/set the title.
Definition TH1.cxx:6686

TH1::Draw
void Draw(Option_t *option="") override
Draw this histogram with options.
Definition TH1.cxx:3066

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:9190

TSpectrum
Advanced Spectra Processing.
Definition TSpectrum.h:18

TSpectrum::SmoothMarkov
const char * SmoothMarkov(Double_t *source, Int_t ssize, Int_t averWindow)
One-dimensional markov spectrum smoothing function.
Definition TSpectrum.cxx:1198

TString
Basic string class.
Definition TString.h:139

TString::Data
const char * Data() const
Definition TString.h:376