[d2n-analysis-talk] TVector Issue

[David Flay]

Hi all,

I was wondering if any of you have come across this issue:

I'm trying to use TGraph in the form:

TGraphErrors(x,y,ex,ey)

Now, if you have all these quantities as TVectorT objects, you don't need
to specify the length of the array, which is great for making plots of
(world) data.  So I'm just reading in these data files and plotting them
without worrying about the dimension of the vector.  However, while the
graph plots just fine, I do get the error message:

Error in <TVectorT<float>::operator()>: Request index(17) outside vector
range of 0 - 1

For example.

Has anyone come across this and if so, have a fix?

Thanks!

Dave


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David Flay
Physics Department
Temple University
Philadelphia, PA 19122

office: Barton Hall, BA319
phone: (215) 204-1331

e-mail: flay at jlab.org
            flay at temple.edu

website: http://www.jlab.org/~flay
              http://quarks.temple.edu
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