Hi All, I am having a problem that I do not really understand. I am trying to plot an array (Int_t dum[24]) against the other (Float_t le_ped[24]) and getting the following error: ------------------ Error: Can't call TGraph::TGraph(24,dum,le_ped) in current scope FILE:kings.C LINE:22 Possible candidates are... filename line:size busy function type and name (in TGraph) (compiled) 0:0 0 public: TGraph TGraph(void); (compiled) 0:0 0 public: TGraph TGraph(Int_t n); (compiled) 0:0 0 public: TGraph TGraph(Int_t n,const Int_t* x,const Int_t* y); (compiled) 0:0 0 public: TGraph TGraph(Int_t n,const Float_t* x,const Float_t* y); (compiled) 0:0 0 public: TGraph TGraph(Int_t n,const Double_t* x,const Double_t* y); (compiled) 0:0 0 public: TGraph TGraph(const TVector& vx,const TVector& vy); (compiled) 0:0 0 public: TGraph TGraph(const TVectorD& vx,const TVectorD& vy); (compiled) 0:0 0 public: TGraph TGraph(const TH1* h); (compiled) 0:0 0 public: TGraph TGraph(TGraph&); filename line:size busy function type and name (in TNamed) filename line:size busy function type and name (in TObject) filename line:size busy function type and name (in TAttLine) filename line:size busy function type and name (in TAttFill) filename line:size busy function type and name (in TAttMarker) *** Interpreter error recovered *** ----------------------------------------------------- And the code is : ---------------------------------- { // reading file Float_t re_ped[24],rh_ped[24],le_ped[24],lh_ped[24]; FILE *pedestalfile=fopen("ped410.dat","r"); Int_t n=0; cout<<"Reading Pedestal Data"<<endl; while (fscanf(pedestalfile,"%f%f%f%f",&re_ped[n],&rh_ped[n],&le_ped[n],&lh_ped[n]) ) { n++; // counting number of entries for the graph if (n == 24) break; } fclose(pedestalfile); Int_t dum[24] ={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24}; for(Int_t i=0;i<24;i++){ printf("%f,%f,%f,%f,%d\n",re_ped[i],rh_ped[i],le_ped[i],lh_ped[i],i); } TGraph *gr = new TGraph(24,dum,le_ped); gr->Draw("AP"); } ------------------------------------------------------ Could anyone help me understand what I am doing wrong here? thanks a lot, ahmet. *************** Ahmet Sedat Ayan Physics & Astronomy Dept. Van Allen Hall University of Iowa Iowa City, IA, 52242 Voice : (++ 1 319) 335-1941 (W) (GMT-6) Occupation : Ph.D Candidate (But still dreamer!) e-mail : ayan@cms.physics.uiowa.edu web : http://jazz.physics.uiowa.edu/~ayan
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