Example to illustrate deconvolution function (class TSpectrum).
Author: Miroslav Morhac, Olivier Couet
This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Wednesday, April 17, 2024 at 11:21 AM.
Int_t i;
const Int_t nbins = 256;
Double_t xmin = 0;
Double_t xmax = nbins;
Double_t source[nbins];
Double_t response[nbins];
gROOT->ForceStyle();
TString dir = gROOT->GetTutorialDir();
TString file = dir+"/spectrum/TSpectrum.root";
TFile *f = new TFile(file.Data());
TH1F* h = (TH1F*) f->Get("decon3");
h->SetTitle("Deconvolution of closely positioned overlapping peaks using Richardson-Lucy deconvolution method");
TH1F* d = (TH1F*) f->Get("decon_response_wide");
for (i = 0; i < nbins; i++) source[i]=h->GetBinContent(i + 1);
for (i = 0; i < nbins; i++) response[i]=d->GetBinContent(i + 1);
h->SetMaximum(30000);
h->Draw("L");
TSpectrum *s = new TSpectrum();
s->DeconvolutionRL(source,response,256,10000,1,1);
for (i = 0; i < nbins; i++) d->SetBinContent(i + 1,source[i]);
d->SetLineColor(kRed);
d->Draw("SAME L");
Info in <TCanvas::MakeDefCanvas>: created default TCanvas with name c1
Draw all canvases
gROOT->GetListOfCanvases()->Draw()