Dataloader problem

TMVA
1

If I add dataloader->AddVariable(“ru/rl>0?1:0”,‘I’) in my TMVA program, it will occur : histograms with zero entries: 0 : 0 cannot compute separation
: histograms with zero entries: 0 : 0 cannot compute separation
: -nan -nan -nan -nan -nan -nan
: signal and background histograms have different or invalid dimensions:
***> abort program execution
terminate called after throwing an instance of ‘std::runtime_error’
what(): FATAL error
And the distribution of “ru/rl>0?1:0” is attached here, no NaN, no Infinite; so what’s wrong here.

d770c68b6877a45a1a4e8f0d104a2d6
d770c68b6877a45a1a4e8f0d104a2d6877×664 28.9 KB

2

Let’s ask @moneta our TMVA expert.

3

Hello,
I would need a reproducable code with the input file for understanding the cause of the problem.
Thank you and best regards

Lorenzo