Re: Re: Names of histograms reset after TFileMerger from Yaxian Mao on 2008-06-11 (RootTalk)

From: Yaxian Mao <maoyx_at_iopp.ccnu.edu.cn>
Date: Wed, 11 Jun 2008 22:40:06 +0800

I am sorry. I got the same output on my screen when I excute the macro. However if you go to the mergeOutput.root file created by this macro,you will see the names of all the histograms become histosscaled 1, 2, 3 ... not like the display on the screen.,
Thanks a lot!
Cheers...Yaxian

Rene Brun wrote:
> 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 *
>> ************************************************
>>
>>
>
>
>

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 - 16:50:10 CEST

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