Error: illegal pointer to class object Spher3D_sig 0x0 396 plot1.C:7: *** Interpreter error recovered ***

Hi all,

I am getting illegal pointer error when I try Draw() a histogram ( but I never used to get this before).

I have just included a simple file

// test.C

{ gStyle->SetOptFit(111111);

// signal

 TFile* setA = TFile::Open("hist_stop_sig.root");

 TH1F *Spher3D_sig = setA->Get("h_Sphericity3D"); Spher3D_sig->Draw();
}

Any help will be appreciated.

Razzak Received on Fri Oct 26 2007 - 15:40:40 CEST