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Smooth.C
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1/// \file
2/// \ingroup tutorial_spectrum
3/// \notebook
4/// Example to illustrate the Markov smoothing (class TSpectrum2).
5///
6/// \macro_image
7/// \macro_code
8///
9/// \authors Miroslav Morhac, Olivier Couet
10
11#include <TSpectrum2.h>
12
13void Smooth() {
14 Int_t i, j;
15 const Int_t nbinsx = 256;
16 const Int_t nbinsy = 256;
17 Double_t xmin = 0;
18 Double_t xmax = (Double_t)nbinsx;
19 Double_t ymin = 0;
20 Double_t ymax = (Double_t)nbinsy;
21 Double_t** source = new Double_t*[nbinsx];
22 for (i=0;i<nbinsx;i++)
23 source[i] = new Double_t[nbinsy];
24 TString dir = gROOT->GetTutorialDir();
25 TString file = dir+"/spectrum/TSpectrum2.root";
26 TFile *f = new TFile(file.Data());
27 auto smooth = (TH2F*) f->Get("smooth1");
29 auto *s = new TSpectrum2();
30 for (i = 0; i < nbinsx; i++){
31 for (j = 0; j < nbinsy; j++){
32 source[i][j] = smooth->GetBinContent(i + 1,j + 1);
33 }
34 }
35 s->SmoothMarkov(source,nbinsx,nbinsx,3); //5,7
36 for (i = 0; i < nbinsx; i++){
37 for (j = 0; j < nbinsy; j++)
38 smooth->SetBinContent(i + 1,j + 1, source[i][j]);
39 }
40 smooth->Draw("SURF2");
41}
#define f(i)
Definition: RSha256.hxx:104
int Int_t
Definition: RtypesCore.h:45
double Double_t
Definition: RtypesCore.h:59
float xmin
Definition: THbookFile.cxx:95
float ymin
Definition: THbookFile.cxx:95
float xmax
Definition: THbookFile.cxx:95
float ymax
Definition: THbookFile.cxx:95
#define gROOT
Definition: TROOT.h:404
R__EXTERN TStyle * gStyle
Definition: TStyle.h:414
A ROOT file is a suite of consecutive data records (TKey instances) with a well defined format.
Definition: TFile.h:54
2-D histogram with a float per channel (see TH1 documentation)}
Definition: TH2.h:257
Advanced 2-dimensional spectra processing.
Definition: TSpectrum2.h:18
Basic string class.
Definition: TString.h:136
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:1589
static constexpr double s
Definition: file.py:1