Re: Problem with merging trees via hadd

Hi Michael,

How did the merge fails? (The instances are 'cycles' or backup copies of the TTree meta-data and hadd will ignore all but the highest cycle version).

Cheers,
Philippe.

On 5/15/12 12:43 PM, Michael Boehler wrote:
> Dear RootTalkers,
>
> I have the following problem:
>
> I'm trying to merge (three) root files with a directory with histograms and trees via hadd.
>
> hadd newFile.root output_0001/ZmumuNp5_pt20.root output_0002/ZmumuNp5_pt20.root output_0003/ZmumuNp5_pt20.root
>
>
> The content of the files is listed below. The files have different instances of the trees e.g. tau;26 in output_0001 and tau;17 in
> output_0002.
> The histogram merging is working perfectly. But the trees can only be merged if the number behind ; is the same.
>
> First I was working with ROOT530. But also checking the *Pro*, version 5.32/03
> <http://root.cern.ch/drupal/content/production-version-532> didn't solve this problem.
> Is this a known problem? Is there any quick solution to solve this problem?
>
> Thanks for any help.
>
> Cheers,
> Michael
>
>
>
>
> [lxplus247] /tmp/boehlerm > root -l output_0001/ZmumuNp5_pt20.root
> root [0]
> Attaching file output_0001/ZmumuNp5_pt20.root as _file0...
> root [1] .ls
> TFile** output_0001/ZmumuNp5_pt20.root
> TFile* output_0001/ZmumuNp5_pt20.root
> KEY: TDirectoryFile histos;1 histos
> KEY: TTree tau;26 physics
> KEY: TTree tau;25 physics
> KEY: TTree tmvatree;1 tmvatree
> KEY: TTree tauinfo;1 tauinfo
>
>
> [lxplus247] /tmp/boehlerm > root -l output_0002/ZmumuNp5_pt20.root
> root [0]
> Attaching file output_0002/ZmumuNp5_pt20.root as _file0...
> root [1] .ls
> TFile** output_0002/ZmumuNp5_pt20.root
> TFile* output_0002/ZmumuNp5_pt20.root
> KEY: TDirectoryFile histos;1 histos
> KEY: TTree tau;17 physics
> KEY: TTree tau;16 physics
> KEY: TTree tmvatree;1 tmvatree
> KEY: TTree tauinfo;1 tauinfo
>
>
> [lxplus247] /tmp/boehlerm > root -l output_0003/ZmumuNp5_pt20.root
> root [0]
> Attaching file output_0003/ZmumuNp5_pt20.root as _file0...
> root [1] .ls
> TFile** output_0003/ZmumuNp5_pt20.root
> TFile* output_0003/ZmumuNp5_pt20.root
> KEY: TDirectoryFile histos;1 histos
> KEY: TTree tau;17 physics
> KEY: TTree tau;16 physics
> KEY: TTree tmvatree;1 tmvatree
> KEY: TTree tauinfo;1 tauinfo
>
>
> the files are stored on the lxplus machine 247 in the tmp dir: /tmp/boehlerm
>
Received on Tue May 15 2012 - 19:48:13 CEST