Hi,
I would like to use TFractionFitter class to find the fraction of background events and signal events in the data.
Therefore I fited the data with background mc and signal mc.
I used GetPlot() function to fit data with MCs and ploted the fitted histogram. But I do not know how to find the actual fraction value of background and signal. ( for example I would like to have output in this from: 0.9 signal and 0.1 background).
I think I should use GetResult function. But I don' t know how?
Thanks for any help,
Nasim
finalsum1->Add(energy_dis[0],addingsum_wbi207,1,-1);
TObjArray *mc=new TObjArray(2);
mc->Add(energy_dis[1]);
mc->Add(energy_dis[8]);
TFractionFitter* fit=new TFractionFitter(finalsum1,mc);
Int_t status=fit->Fit();
cout<<"fit status: " <<status<<endl;
finalsum1->SetMinimum(0.);
if (status == 0) { // check on fit statusTH1F* result= (TH1F*) fit->GetPlot(); finalsum1->Draw("E");
mc->Draw("same"); result->SetLineColor(8); result->Draw("same");
} Received on Sun Feb 19 2006 - 14:29:25 MET
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