[Gate-users] Merging muliple root files on cluster

[Marc Chamberland]

Hi!

Just use the hadd utility (it comes with Root). For example, if you want to merge output1.root and output2.root into one file called mergedOutput.root, you would type:

> hadd mergedOutput.root output1.root output2.root

Hope this helps!
Marc



__________________________

Marc Chamberland, MSc
PhD candidate
Department of Physics
Carleton University
Ottawa (ON)

Le 2012-10-12 à 4:01 AM, bassim <bassim.aklan at imp.uni-erlangen.de>
 a écrit :

> Hallo Gate user,
> I have  a problem with the root file merger "gjm", when I use it to combine my root files. I am using Gate (v6.1) for my Monto Carlo simulation. Ich habe benn run a simulation on the cluster and I get as output two large root files each with 5 GB. I try to use the gjm in the cluster_tool to merge my root files but I get flowing error: Merge: No latest_event_ID histogram - exit!. Can anybody help me with this problem or is there any anther method to combine root files. By the way I was trying combining the root files on our cluster. I would be appreciated, if someone can give some solutions.
> 
> Best regards,
> B. Aklan
> 
> -- 
> Bassim Aklan, M.Sc.
> Institute of Medical Physics - Section for MR Imaging
> University of Erlangen-Nuremberg
> Henkestr. 91
> 91052 Erlangen, Germany
> phone: +49-(0)9131/85-25545
> Mobile phone: +49-17665299782
> bassim.aklan at imp.uni-erlangen.de
> Homepage: www.imp.uni-erlangen.de/mri
> 
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