Re: TChain built with pointers to trees

Of course I was too fast typing. Instead of  tree2->CopyEntries(tree3); //etc
you should read
 tree1->CopyEntries(tree3); //etc

Rene Brun

Rene Brun wrote:
> Chiara,
>
> This case is not supported. Instead I suggest to make one single TTree
> in memory with
> tree1->CopyEntries(tree2);
> delete tree2;
> tree2->CopyEntries(tree3); //etc
>
> Rene Brun
>
> Chiara Zampolli wrote:
>> Dear rooters,
>>
>> I would like to know whether it could be possible to build a chain
>> adding trees instead of files. Actually, what I would like to do is
>> something like:
>>
>> TTree *tree1 = new TTree("T","Tree test");
>> TTree *tree2 = new TTree("T","Tree test"); TTree *tree3 =
>> new TTree("T","Tree test");
>> TChain *chain = new TChain("T");
>> chain->Add(tree1);
>> chain->Add(tree2);
>> chain->Add(tree3);
>>
>> Is it something possible or not? Is there any workaround that I
>> don't know?
>> Thank you in advance.
>>
>> Regards, Chiara
>>
>
Received on Wed Sep 12 2007 - 16:22:55 CEST