Hi. I have got the following program and i would like to apply a fit. But if i use the fit panel it doesn't accept my command. It says that (for example)" Function pol1 is not 2-D". How can I fit my graph.Which statement can I use? Here is my program. { gROOT->Reset(); ifstream in; in.open("data01.dat",ios::in); Float_t x0,x1; Float_t bins=4096,lower=-0.5,upper=4095.5; // TFile *f=new TFile("2root.dat","RECREATE"); TH1F *h0=new TH1F("h0","1",bins,lower,upper); // TH1F *h1=new TH1F("h1","",bins,lower,upper); // h0->SetMaximum(30); TNtuple *my_ntup = new TNtuple("name","title","x:y"); int lines = 0; while(1) { if(!in.good())break; if(x0<4095&&x0>480&&x1<4095&&x1>480) my_ntup->Fill(x0,x1); lines++; } cout << lines << "lines were read from file " << endl; in.close(); my_ntup->Draw("y:x"); } Cheers for help, Sam.
This archive was generated by hypermail 2b29 : Tue Jan 01 2002 - 17:50:35 MET