Piergiorgio Cerello wrote:
>
> Dear Rooters,
>
> I'm trying to automatically split a Tree with the option Splitlevel.
> The code runs, but I get an empty file as output... so, I'm wrong
> somewhere. Please help me to understand where! Here is the code:
>
> TTree *hdtt = new TTree("F","FINUDA HDT tree");
> hdtt->SetAutoSave(10000000); // autosave when 10 Mbytes written
>
> ....
>
> TFndHdt *fndhdt;
> TBranch *b=0;
> Int_t bsize = 64000;
> Int_t split = 1;
> if (b)
> b->SetAddress(fndhdt);
> else
> b = hdtt->Branch("fndhdt","TFndHdt",&fndhdt,bsize,split);
>
> ........ (the fndhdt object is built)
>
> hdtt->Fill(); // within a loop on events
>
> ........
>
> hdtt->Write(); // every 250 events and at end of run
>
> Thanks in advance,
>
Piergiorgio,
To answer your mail, I need a bit more info. Where do you create
the object pointed by fndhdt?
Look at $ROOTSYS/test/Event for an example.
Rene Brun
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