the files aren't broken. I can load them individually from the
command line in ROOT using the exact same commands that kill
ROOT from the inside of my program (This is what I mean when I
contend that I have a ridiculous amount of bad luck when I try and
do simple things). The problem with lr.C is
that I'll have to call it 400 times in this program. I don't
think it is wise to chain 400 lr files due to their size. If I am
mistaken in this assumption, please let me know as this task
would become very easy to accomplish. I was also thinking about
filling a 2-D array of 2.6 million integers but I haven't tried
this either because I'm afraid of more memory problems. I don't
know much about the limitations of the innards of computing. If
an array this large, e.g. Int_t list[2][1300000], is ok, then I
could cut the possibility that it is a problem with having two
input files open (the ifstream eventlist file and the lr-# ntuple).
Also,since I'm building an ntuple of 12 entries and using the memory
addresses of the branches in the lr-# file. I am calling
SetBranchStatus, and SetBranchAddress functions and I don't know if
these are accessible through any other method outside of calling an
instance of TNtuple.
-e
Quoting Christopher Crawford <chris2@lns.mit.edu>:
> Hi Eugene,
> Have you tried 'lr.C'? Perhaps those files are broken, but still
> it shouldn't break ROOT.
> --Chris
>
> TA-53/MPF-1/D111 P-23 MS H803
> LANL, Los Alamos, NM 87545
> 505-665-9804(o) 665-4121(f) 662-0639(h)
>
>
> On May 22, 2006, at 01:51:35, Eugene J. Geis wrote:
>
> > Hello,
> > Another insignificant email of the ridiculous bad luck
> > I have with every simple thing I try:
> >
> > I'm opening an event list that spans about 400+ run
> > numbers. I need to open the 7 data files that contain
> > my event list sequentially, and open single lr-# files
> > one at a time to retrieve and fill a 12 member branch
> > in a TTree. When I open particular run numbers, e.g.
> > 8412, 8413, 8414, 8416, 8482... my program simply breaks.
> > I declare the TFile, and when I file->Get("lr"); the program
> > breaks and root quits. Works for all files in my runlist from
> > ~7800 through 8211, then breaks for the run numbers mentioned
> > earlier.
> >
> > This is how I call the lr files.
> >
> > TFile* file = new TFile("/net/Data/9/Analysis/data/lr-#.root");
> > TNtuple* block = (TNtuple*)file->Get("lr");
> >
> > I open these files one at a time while I keep an ifstream
> > instance of a file open. Maybe memory errors? In which case
> > I still need to do this differently.
> >
> > Does anyone use some alternate ways of calling lr events from
> > an Ntuple file?
> >
> > -e
> >
> > ----------------------------------------------------------------------
>
> > ----
> > Eugene Geis
> > PhD Student, Physics Department, ASU
> > Research Affiliate, MIT-Bates Laboratory of Nuclear Science
> > eugene.geis@asu.edu
>
>
--------------------------------------------------------------------------
Eugene Geis
PhD Student, Physics Department, ASU
Research Affiliate, MIT-Bates Laboratory of Nuclear Science
eugene.geis@asu.edu
--------------------------------------------------------------------------
http://quickreaction.blogspot.com
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