Re: TTree inside TDirectoryFile

Hi,

i fixed the additive problem

apologizes

actually, i don't know exactly it works nowadays while it was not previously but anyway.

thanks Benjamin for having given the trick of the subdirectory : it help a lot

On Sat, 14 May 2011, Marc Escalier wrote:

> thank you Benjamin
>
> it doesn't crash anymore when doing your suggestion with the directory inside
> the TChain command.
>
> Still i have a remaining issue :
>
> TChain *tree_BunchConfTree_source_full=new
> TChain("photonMeta/BunchConfTree");
>
> in the BunchConfTree, there is several variables, for example an integer :
> ConfigID, which is not 0
> (by checking when reading the file by hand from root)
>
> but when doing :
> int ConfigID=0;
> TBranch *b_ConfigID;
>
> tree_BunchConfTree_source_full->SetBranchStatus("*",0);
> tree_BunchConfTree_source_full->SetBranchAddress("ConfigID",&ConfigID,&b_ConfigID);
>
>
> for (int iFile=0; iFile<fileList.size(); iFile++) {
> const char* filePath = fileList[iFile].c_str();
> tree_BunchConfTree_source_full->Add(filePath);
> }
>
> loop on events :
> tree_BunchConfTree_source_full->GetEntry(ievt);
> cout << "ConfigID=" << ConfigID << endl;
>
> -->
> ConfigID is always 0
>
> ==============
>
>
>
> On Sat, 14 May 2011, Marc Escalier wrote:
>
>> thanks
>>
>> i make some tests and will reply
>>
>> ==============
>> ==============
>> On Sat, 14 May 2011, Benjamin Stieger wrote:
>>
>>> Hi Marc,
>>> Did you try to change the construction of your second TChain?
>>>
>>> TChain *tree_BunchConfTree_source_full = new
>>> TChain("photonMeta/BunchConfTree");
>>>
>>> That works for me when making a chain of trees in subdirectories, but
>>> no idea if it helps in your case.
>>>
>>> Cheers,
>>> Benjamin
>>>
>>>
>>> On Sat, May 14, 2011 at 11:26 AM, Marc Escalier <escalier_at_lal.in2p3.fr>
>>> wrote:
>>>> Hello,
>>>>
>>>> in the context of a program of skimming=reducing of the content of a file
>>>> for those events that pass a given property
>>>> (which works fine but is too long/complex to be reproduced here),
>>>>
>>>> the file to be skimmed, contains :
>>>> -in the root directory (baseline) : a given Tree "photon" : this works
>>>> fine
>>>> -in a subdirectory of the root file : TDirectoryFile "photonMeta", a
>>>> given
>>>> TTree "BunchConfTree"
>>>>
>>>> for the moment, i use this :
>>>>
>>>>  TChain *tree_photon_source_full=new TChain("photon");
>>>>  TChain *tree_BunchConfTree_source_full=new TChain("BunchConfTree");
>>>>
>>>>  for (int iFile=0; iFile<fileList.size(); iFile++) {
>>>>    const char* filePath = fileList[iFile].c_str();
>>>>    tree_photon_source_full->Add(filePath);
>>>>    tree_BunchConfTree_source_full->Add(filePath); <------problem here
>>>>  }
>>>>
>>>> but i don't know how to express the fact that the tree BuncConfTree is
>>>> inside a subdirectory of the root file
>>>> for the instructions above
>>>>
>>>> -->would you have a hint to make the "link" between the tree and the
>>>> subdirectory photonMeta so that it could
>>>> read the content ?
>>>>
>>>> (bonus if time available) :
>>>> at the end, when filling the tree that pass the cuts, i use :
>>>>
>>>>      tree_photon_source_full->GetEntry(ievt);
>>>>      tree_photon_destination->Fill();
>>>>
>>>>      tree_BunchConfTree_source_full->GetEntry(ievt);
>>>>      tree_BunchConfTree_destination->Fill();
>>>>
>>>> -->how to create a subdirectory : TDirectoryFile "photonMeta" a save the
>>>> tree "BunchConfTree"
>>>> only in this directory (while keeping the other in the main directory) ?
>>>> ( in order to respect the format of the original file)
>>>>
>>>> for the moment, i use :
>>>>  file_destination=tree_photon_destination->GetCurrentFile();
>>>>  file_destination->Write();
>>>>  file_destination->Close();
>>>>
>>>> thanks
>>>>
>>>>
>
Received on Sat May 14 2011 - 18:46:59 CEST