[ROOT] Sum histogram

From: giuseppe.foggi@libero.it
Date: Fri Nov 29 2002 - 10:07:06 MET


Hi rooters,
 I try add histogram with the following command
 
 TFile f("CommonTotaleM.root") 
 TH1F *h = (TH1F*)f.Get("BASE_ALL_M")  
 h->Add(h)  
 
 but I get
 *** Break *** segmentation violation        
 
 Why?
 
 If I try
 
 TFile f("CommonTotaleM.root") 
 TH1F *h = (TH1F*)f.Get("BASE_ALL_M") 
 h->Draw()  
 
 It displays my histogram, but if after I try to execute the following
 command 
 
 h->Add(h)  
 
 I get 
 Error: Symbol h is not defined in current scope 
 FILE:/tmp/filensNVWl_cint LINE:1
 *** Interpreter error recovered ***
 
 Why?
 
 
 Thank you for your help.
 Giuseppe.
 



This archive was generated by hypermail 2b29 : Sat Jan 04 2003 - 23:51:21 MET