Conversion of histograms in Tree

[nab]

Dear Developers,

I want to make a Tree of my .root file, Kindly help me to store the histograms in terms of Tree.
The file which I want to convert in the form of Tree is output_Veto.root so that it will look like a sample file that is May26_2.root (/afs/cern.ch/user/n/nmajeed/public)
I am creating output_Veto.root using a macro new_macro.cc

.output_Veto.root (9.5 KB)

new_macro.cc (10.0 KB)

Thanks

[Danilo]

Hi,

I think I do not exactly get what you are trying to achieve. Could you clarify perhaps?

D

[nab]

In simple I want to convert output_veto.root file exactly as May26_2.root file
In output_veto.root file I have different parameters i.e vetoMu_pt, VetoMu_eta, VetoMu_phi. The same parameters are in May26_2.root file but thay are stored in a Tree. I want output_veto.root to be exactly as May26_2.root file

[Danilo]

Hi,

so you would like to unpack histogrms, entry by entry, into ttrees?

D

[nab]

yes exactly I want this

[Danilo]

Hi,

I think this is not possible. The histogram is a form of data reduction in some sense the information about the original entries is not available anymore (by construction).

Cheers,
Danilo

[nab]

Then there is some other way of getting histograms. Like in tree we first define a tree and then get all branches as
TTree t = (TTree)f->Get(“demo/AnaTree”);

      t->SetBranchAddress("VetoMu_px",VetoMu_px);
      t->SetBranchAddress("VetoMu_py",VetoMu_py);
      t->SetBranchAddress("VetoMu_pz",VetoMu_pz);
      t->SetBranchAddress("VetoMu_en",VetoMu_en);

How can I call different parameters instead of calling as a histograms

[Danilo]

I am sorry I do not understand the question.