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Src5.C File Reference

Detailed Description

View in nbviewer Open in SWAN Example to illustrate high resolution peak searching function (class TSpectrum2).

Found 4 candidate peaks
posx= 59, posy= 59, value=2031
posx= 3, posy= 59, value=2006
posx= 3, posy= 3, value=2002
posx= 59, posy= 3, value=1999
#include <TSpectrum2.h>
void Src5() {
Int_t i, j, nfound;
const Int_t nbinsx = 64;
const Int_t nbinsy = 64;
Double_t xmax = (Double_t)nbinsx;
Double_t ymax = (Double_t)nbinsy;
Double_t** source = new Double_t*[nbinsx];
for (i=0;i<nbinsx;i++)
source[i]=new Double_t[nbinsy];
Double_t** dest = new Double_t*[nbinsx];
for (i=0;i<nbinsx;i++)
dest[i]=new Double_t[nbinsy];
TString dir = gROOT->GetTutorialDir();
TString file = dir+"/spectrum/TSpectrum2.root";
TFile *f = new TFile(file.Data());
auto search = (TH2F*) f->Get("search3;1");
TSpectrum2 *s = new TSpectrum2();
for (i = 0; i < nbinsx; i++){
for (j = 0; j < nbinsy; j++){
source[i][j] = search->GetBinContent(i + 1,j + 1);
nfound = s->SearchHighRes(source, dest, nbinsx, nbinsy, 2, 5, kFALSE, 10, kFALSE, 1);
printf("Found %d candidate peaks\n",nfound);
Double_t *PositionX = s->GetPositionX();
Double_t *PositionY = s->GetPositionY();
auto m = new TMarker();
for (i=0;i<nfound;i++) {
printf("posx= %d, posy= %d, value=%d\n",(Int_t)(PositionX[i]+0.5), (Int_t)(PositionY[i]+0.5),
#define f(i)
Definition RSha256.hxx:104
int Int_t
Definition RtypesCore.h:45
const Bool_t kFALSE
Definition RtypesCore.h:92
double Double_t
Definition RtypesCore.h:59
@ kRed
Definition Rtypes.h:66
float xmin
float ymin
float xmax
float ymax
#define gROOT
Definition TROOT.h:406
R__EXTERN TStyle * gStyle
Definition TStyle.h:412
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:251
Manages Markers.
Definition TMarker.h:22
Advanced 2-dimensional spectra processing.
Definition TSpectrum2.h:18
Double_t * GetPositionY() const
Definition TSpectrum2.h:45
Int_t SearchHighRes(Double_t **source, Double_t **dest, Int_t ssizex, Int_t ssizey, Double_t sigma, Double_t threshold, Bool_t backgroundRemove, Int_t deconIterations, Bool_t markov, Int_t averWindow)
This function searches for peaks in source spectrum It is based on deconvolution method.
Double_t * GetPositionX() const
Definition TSpectrum2.h:44
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
Definition file.py:1
auto * m
Definition textangle.C:8
#define dest(otri, vertexptr)
Definition triangle.c:1040
Miroslav Morhac, Olivier Couet

Definition in file Src5.C.