So, I finally managed to get my program to fill a root tree running
(thanks to everybody who replied)... but... how do I access the data
that I've put in my root file.
I started with what I though was the obvious thing:
root [0] TFile f = new TFile ("Output.root");
root [1] tree->MakeCode("");
Warning in <TLeafObject::Streamer>: Cannot find class:Delay
Then tried to execute tree.C but this also complain that it cannot find
the delay class.
I also tried the example event from $ROOTSYS/test/
(http://root.cern.ch/root/html/examples/eventa.cxx.html) (interactively)
with pretty much the same effect:
root [0] gROOT->Reset();
root [1] TFile f("Event.root");
root [2] TTree *T = (TTree*)f.Get("T");
Warning in <TBranchClones::Streamer>: Unknow class: Track. Cannot read
BranchClones: fTracks
Warning in <TLeafObject::Streamer>: Cannot find class:Event
root [3] Event *event = new Event();
Error: No symbol Event in current scope FILE:/tmp/16206daa LINE:1
Error: No symbol Event in current scope FILE:/tmp/16206daa LINE:1
Error: type Event not defined FILE:/tmp/16206daa LINE:1
Warning: Undeclared symbol Event*event. Automatic variable allocated
FILE:/tmp/16206daa LINE:1
*** Interpreter error recovered ***
root [4]
This must be something stupid but what?
Henk
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%DCL-E-NOCFFE, unable to locate coffee - keyboard input suspended.
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