Errors with TH1F

A derived quantity I am working with (best not go into the detail) requires the use of anisotropic errors. By this I mean the positive error is a different value to the negative error:

(note the above line art is rotated by 90 degrees - the errors on bin content are “anisotropic”)

I am currently using my own class, inherited from TH1F. How do I deal with this? I can’t find anything in the documentation that does this… anyone got any pointers?

Hi Alan,

you could use e.g. a TGraphAsymmErrors, see With asymmetric errors, a histogram (which in principle is just a means to count) isn’t too useful anyway.

Cheers, Axel.

Thanks Axel for the reply.