To Whom it May Concern,
I have been attempting to use the "Draw" command within a
macro that references a variable I have defined in the macro.
Although this seems like it should be straightforward, I have
had little success.
For example, I have a list of runs that I want to
loop over. In my ROOT ntuple, there is defined a 'run'
variable. In my macro then, I want to check that 'run'
variable matches a number on my run list.
The code looks something like this;
.
.
int runlist[3] = {1,2,3};
for (i = 0; i < 3 ; i++) {
ntuple.Draw("run", "run = runlist[i]";
}
.
.
.
If I use the number '1' in place of 'runlist[i]', of
course it works fine. However, I want to use a *variable* and not
a number. I have attempted to use variation of the 'TCut' command
in place of the selection and different placements of the double
quotes but have not been able to succeed. In addition, I have looked
over the TTree page (http://root.cern.ch/root/html/TTree.html) but
was not able to see this problem addressed.
Any advice?
Thanks in advance.
regards,
Lars
--
______________________________________
Lars Ewell
Brookhaven National Laboratory
PHENIX Group
Physics Dept. 510C
Upton, NY 11973
ewell@bnl.gov
Phone (631)344-7070
FAX (631)344-3253
www http://www.phenix.bnl.gov/~ewell
_____________________________________
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