Hi All, my question is the following: I read an ntuple (root) file and create many histograms e.g. ........ OBJ: TH1F h0 L> 3.5 : 0 OBJ: TH1F h1 L> 4. : 0 OBJ: TH1F h2 L> 5. : 0 etc.. ...... I would like to write two of these historgrams in different files (one histogram in one file). But when I create a file, say f1.root, to write h1 , I can not access the other histos anymore. I understand that when I create the f1.root , current directory becomes this file but i do not know how to go back to the directory in which I couls list and see all other histograms, objects etc as shown above... I would appreciate any comments and helps... Thanks, Ahmet ROOT versions: 3.01/06 on SunSparc *************** 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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