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Background_gamma64.C
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1/// \file
2/// \ingroup tutorial_spectrum
3/// \notebook
4/// Example to illustrate the background estimator (class TSpectrum2).
5///
6/// \macro_image
7/// \macro_code
8///
9/// \authors Miroslav Morhac, Olivier Couet
10
11#include <TSpectrum2.h>
12
13#include <TSpectrum2.h>
14void Background_gamma64() {
15 Int_t i, j;
16 const Int_t nbinsx = 64;
17 const Int_t nbinsy = 64;
18 Double_t xmin = 0;
19 Double_t xmax = (Double_t)nbinsx;
20 Double_t ymin = 0;
21 Double_t ymax = (Double_t)nbinsy;
22 Double_t ** source = new Double_t*[nbinsx];
23 for (i=0;i<nbinsx;i++)
24 source[i]=new Double_t[nbinsy];
25 TString dir = gROOT->GetTutorialDir();
26 TString file = dir+"/spectrum/TSpectrum2.root";
27 TFile *f = new TFile(file.Data());
28 auto back = (TH2F*) f->Get("back1");
30 auto s = new TSpectrum2();
31 for (i = 0; i < nbinsx; i++){
32 for (j = 0; j < nbinsy; j++){
33 source[i][j] = back->GetBinContent(i + 1,j + 1);
34 }
35 }
36 s->Background(source,nbinsx,nbinsy,4,4,TSpectrum2::kBackDecreasingWindow,TSpectrum2::kBackSuccessiveFiltering);
37 for (i = 0; i < nbinsx; i++){
38 for (j = 0; j < nbinsy; j++)
39 back->SetBinContent(i + 1,j + 1, source[i][j]);
40 }
41 back->Draw("SURF1");
42}
#define f(i)
Definition RSha256.hxx:104
int Int_t
Definition RtypesCore.h:45
double Double_t
Definition RtypesCore.h:59
float xmin
float ymin
float xmax
float ymax
#define gROOT
Definition TROOT.h:406
R__EXTERN TStyle * gStyle
Definition TStyle.h:433
A ROOT file is an on-disk file, usually with extension .root, that stores objects in a file-system-li...
Definition TFile.h:53
2-D histogram with a float per channel (see TH1 documentation)
Definition TH2.h:307
Advanced 2-dimensional spectra processing.
Definition TSpectrum2.h:18
@ kBackSuccessiveFiltering
Definition TSpectrum2.h:34
@ kBackDecreasingWindow
Definition TSpectrum2.h:33
Basic string class.
Definition TString.h:139
const char * Data() const
Definition TString.h:376
void SetOptStat(Int_t stat=1)
The type of information printed in the histogram statistics box can be selected via the parameter mod...
Definition TStyle.cxx:1636