Dear ROOTers, I have a file which contains various histograms. I have a private class which I want to access that histo file and in a new histo "test" I want to place the sum of h1 and h2, where h1 and h2 are two histos of the histogram file. In my private class I have declared public : TH1F* test; private : TFile* f; whereas in the code of my class I do : f=new TFile("data.root"); test=new TH1F(.........); // ... represent the usual arguments test->Add(h1,h2); The result is that in my browser I see under ROOT files indeed the file "data.root" with all the original histograms and also the new histo "test". However, I would like to have the histo "test" present in the "memory mapped files" which appears in my browser. How can I achieve that ? Thanks, Nick. *----------------------------------------------------------------------* Dr. Nick van Eijndhoven Department of Subatomic Physics email : nick@fys.ruu.nl Utrecht University / NIKHEF tel. +31-30-2532331 (direct) P.O. Box 80.000 tel. +31-30-2531492 (secr.) NL-3508 TA Utrecht fax. +31-30-2518689 The Netherlands WWW : http://www.fys.ruu.nl/~nick Office : Ornstein lab. 172 ---------------------------------------------------------------------- tel. +41-22-7679751 (direct) CERN PPE Division / ALICE exp. tel. +41-22-7675857 (secr.) CH-1211 Geneva 23 fax. +41-22-7679480 Switzerland CERN beep : 13+7294 Office : B 160 1-012 *----------------------------------------------------------------------*
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