Re: Re: Names of histograms reset after TFileMerger

As already reported to you, I cannot reproduce your problem. See my previous mail

Rene Brun

Yaxian Mao wrote:
> Hi Rene,
> I am sorry to disturb you again. But may I ask how about my problem? could you
> reproduce it or not? maybe this is trival for you but it is not convenient for me if a
> long time later I don't know exactly what I was plotted on my histogram.
> Thanks for your help!
> Regards,
> Yaxian
>
> Rene Brun wrote:
>
>> Yves,
>>
>> When I run your script I obtain the output below and it is what I
>> expect. What is your version of ROOT?
>>
>> Rene
>>
>> root [1] .x merge.C
>> [TFile::Cp] Total 0.02 MB |====================| 100.00 % [47.9 MB/s]
>> [TFile::Cp] Total 0.02 MB |====================| 100.00 % [54.0 MB/s]
>> [TFile::Cp] Total 0.02 MB |====================| 100.00 % [55.9 MB/s]
>> hPtGammaScaled Number of #gamma over calorimeter
>> hPhiGammaScaled #phi_{#gamma}
>> hEtaGammaScaled #phi_{#gamma}
>> hConePtSumScaled #Sigma p_{T} in cone
>> hPtPromptScaled Number of #gamma over calorimeter
>> hPhiPromptScaled #phi_{#gamma}
>> hEtaPromptScaled #phi_{#gamma}
>> hPtFragmentationScaled Number of #gamma over calorimeter
>> hPhiFragmentationScaled #phi_{#gamma}
>> hEtaFragmentationScaled #phi_{#gamma}
>> hPtPi0DecayScaled Number of #gamma over calorimeter
>> hPhiPi0DecayScaled #phi_{#gamma}
>> hEtaPi0DecayScaled #phi_{#gamma}
>> hPtOtherDecayScaled Number of #gamma over calorimeter
>> hPhiOtherDecayScaled #phi_{#gamma}
>> hEtaOtherDecayScaled #phi_{#gamma}
>> hPtConversionScaled Number of #gamma over calorimeter
>> hPhiConversionScaled #phi_{#gamma}
>> hEtaConversionScaled #phi_{#gamma}
>> hPtUnknownScaled Number of #gamma over calorimeter
>> hPhiUnknownScaled #phi_{#gamma}
>> hEtaUnknownScaled #phi_{#gamma}
>> TFile** mergedOutput.root
>> TFile* mergedOutput.root
>> KEY: TList histosscaled;1 Doubly linked list
>> root [2]
>>
>>
>> Yves Schutz wrote:
>>
>>> Rene,
>>> The wrong macro has been sent to you. What Yaxian wanted to point to
>>> is that the Name of the Merged histograms are not kept.
>>> Just run the following macro. Thanks ... Yves
>>> void merge()
>>> {
>>> TFileMerger m ;
>>> TString outName("mergedOutput.root") ;
>>> m.OutputFile(outName) ;
>>> m.AddFile("histosscaled1.root") ;
>>> m.AddFile("histosscaled2.root") ;
>>> m.Merge() ;
>>> TFile in("histosscaled1.root") ;
>>> TList * l = (TList*)in.Get("histosscaled") ;
>>> for (Int_t index = 0; index < l->GetEntries(); index++)
>>> cout << l->At(index)->GetName() << " " << l->At(index)->GetTitle()
>>> << endl ; ;
>>> TFile out(outName) ;
>>> out.ls() ;
>>> }
>>>
>>> and you get
>>> hPtGammaScaled Number of #gamma over calorimeter
>>> hPhiGammaScaled #phi_{#gamma}
>>> hEtaGammaScaled #phi_{#gamma}
>>> hConePtSumScaled #Sigma p_{T} in cone
>>> hPtPromptScaled Number of #gamma over calorimeter
>>> hPhiPromptScaled #phi_{#gamma}
>>> hEtaPromptScaled #phi_{#gamma}
>>> hPtFragmentationScaled Number of #gamma over calorimeter
>>> hPhiFragmentationScaled #phi_{#gamma}
>>> hEtaFragmentationScaled #phi_{#gamma}
>>> hPtPi0DecayScaled Number of #gamma over calorimeter
>>> hPhiPi0DecayScaled #phi_{#gamma}
>>> hEtaPi0DecayScaled #phi_{#gamma}
>>> hPtOtherDecayScaled Number of #gamma over calorimeter
>>> hPhiOtherDecayScaled #phi_{#gamma}
>>> hEtaOtherDecayScaled #phi_{#gamma}
>>> hPtConversionScaled Number of #gamma over calorimeter
>>> hPhiConversionScaled #phi_{#gamma}
>>> hEtaConversionScaled #phi_{#gamma}
>>> hPtUnknownScaled Number of #gamma over calorimeter
>>> hPhiUnknownScaled #phi_{#gamma}
>>> hEtaUnknownScaled #phi_{#gamma}
>>> TFile** mergedOutput.root
>>> TFile* mergedOutput.root
>>> KEY: TH2F histosscaled;22 #phi_{#gamma}
>>> KEY: TH2F histosscaled;21 #phi_{#gamma}
>>> KEY: TH1F histosscaled;20 Number of #gamma over calorimeter
>>> KEY: TH2F histosscaled;19 #phi_{#gamma}
>>> KEY: TH2F histosscaled;18 #phi_{#gamma}
>>> KEY: TH1F histosscaled;17 Number of #gamma over calorimeter
>>> KEY: TH2F histosscaled;16 #phi_{#gamma}
>>> KEY: TH2F histosscaled;15 #phi_{#gamma}
>>> KEY: TH1F histosscaled;14 Number of #gamma over calorimeter
>>> KEY: TH2F histosscaled;13 #phi_{#gamma}
>>> KEY: TH2F histosscaled;12 #phi_{#gamma}
>>> KEY: TH1F histosscaled;11 Number of #gamma over calorimeter
>>> KEY: TH2F histosscaled;10 #phi_{#gamma}
>>> KEY: TH2F histosscaled;9 #phi_{#gamma}
>>> KEY: TH1F histosscaled;8 Number of #gamma over calorimeter
>>> KEY: TH2F histosscaled;7 #phi_{#gamma}
>>> KEY: TH2F histosscaled;6 #phi_{#gamma}
>>> KEY: TH1F histosscaled;5 Number of #gamma over calorimeter
>>> KEY: TH2F histosscaled;4 #Sigma p_{T} in cone
>>> KEY: TH2F histosscaled;3 #phi_{#gamma}
>>> KEY: TH2F histosscaled;2 #phi_{#gamma}
>>> KEY: TH1F histosscaled;1 Number of #gamma over calorimeter
>>> Le 10 juin 08 � 08:40, Rene Brun a 閏rit :
>>>
>>>
>>>> I do not understand what you are trying to achieve. Your histograms are
>>>> correctly merged with the statement
>>>> Bool_t result = m.Merge();
>>>>
>>>> but I have no idea of what you want to do with the code following this
>>>> statement.
>>>> Your input files contain a TList of histograms, but you loop on the
>>>> TKeys as if each histogram was a TKey.
>>>>
>>>> Rene Brun
>>>>
>>>> Yaxian Mao wrote:
>>>>
>>>>> Dear Rene and all,
>>>>> I encounterd one problem when I try to merge two different root
>>>>> files by TFileMerger,
>>>>> which never happened before. After merging, all names of histograms
>>>>> in the root file
>>>>> are reseted by itself. I can not understand why, could somebody help
>>>>> me to solve this
>>>>> problem? Thanks very much!
>>>>> My root version is: v5-19-04
>>>>> Best regards,
>>>>> Yaxian
>>>>>
>>>> ============================================
>>>> Yves SCHUTZ (IN2P3-CNRS) collaboration ALICE
>>>> Office: 301 01 022 GSM: +41 76 487 4755
>>>> Mailbox: F02210 Tel: +41 22 76 72 131
>>>> CERN Fax: +41 22 76 79 480
>>>> CH-1211 Gen鑦e 23 m閘: schutz_at_in2p3.fr <mailto:schutz_at_in2p3.fr>
>>>>
>>
>>
>
>
> ************************************************
> * Yaxian Mao *
> * *
> * Address: Institute of Particle Physics, *
> * Huazhong Normal University *
> * Wuhan, 430079, P. R. China *
> * Tel: 0086 27 6786 7946 (lab) *
> * 0086 27 8785 2613 (dormitory) *
> * Fax: 0086 27 6786 3213 *
> * Email: maoyx_at_iopp.ccnu.edu.cn *
> * Yaxian.Mao_at_gmail.com *
> ************************************************
>
>
Received on Wed Jun 11 2008 - 16:34:03 CEST