Logo ROOT  
Reference Guide
 
Loading...
Searching...
No Matches
Smooth.C
Go to the documentation of this file.
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
float ymin
float xmax
float ymax
#define gROOT
Definition TROOT.h:407
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
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