// Read the previously produced N-Tuple and print on screen // its content void read_ntuple_from_file(){ // Open a file, save the ntuple and close the file TFile in_file("conductivity_experiment.root"); TNtuple* my_tuple = (TNtuple*) in_file.GetObjectChecked( "cond_data", "TNtuple"); float pot,cur,temp,pres; float* row_content; cout << "Potential\tCurrent\tTemperature\tPressure\n"; for (int irow=0;irowGetEntries();++irow){ my_tuple->GetEntry(irow); row_content = my_tuple->GetArgs(); pot = row_content[0]; cur = row_content[1]; temp = row_content[2]; pres = row_content[3]; cout << pot << "\t" << cur << "\t" << temp << "\t" << pres << endl; } }