Hello all,
I am trying to test a simple program to write and read a histogram object. I get an error when I try to access the TH1F object which was loaded from my demo.root file.
I looked at the documentation and I tried calling different methods (just in case I was doing something wrong hehehe) but I did not have any success. One thing I tried was (in ROOT environment)
TFile f(“demo.root”)
TBrowser tbrowsenow
Here I was able to see that my THF1 has been properly saved. It is a very simple example… can anyone reproduce the following error? What am I doing wrong?
BTW, I have attached the short silly script…
Thxs,
/*
bash-3.2$ root writeROOT.C
*******************************************
* *
* W E L C O M E to R O O T *
* *
* Version 5.25/02 29 September 2009 *
* *
* You are welcome to visit our Web site *
* http://root.cern.ch *
* *
*******************************************
ROOT 5.25/02 (trunk@30530, Sep 29 2009, 15:28:19 on linuxx8664gcc)
CINT/ROOT C/C++ Interpreter version 5.17.00, Dec 21, 2008
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0]
Processing writeROOT.C...
Test session started ******************************
Error: illegal pointer to class object h2 0x0 502 writeROOT.C:17:
*/
writeROOT.C (1.35 KB)