Error Integral TH1F

[tweety84]

Hi rooters,

I would like to obtain the integral of a TH1F object with its relative error.
I've tried to use the Integral method, but I haven't found the right option in order to obtain the error.


Can you help me?

Thanks in advance.

Tina

[Axel]

Hi,

did you see TH1::IntegralAndError()? If it does it not do what you want, could you specify what is missing / not working?

Cheers, Axel.

[tweety84]

I'm using Root 5.18 ... I think there isn't this method, right?

Cheers,
Tina.

[Axel]

Hi Tina,

see <http://root.cern.ch/root/html518/TH1.html>: no But you might be able to implement it yourself: justtake the algorithm from the trunk (see http://root.cern.ch/root/html/src/TH1.cxx.html#UdxrFB and the function it calls).

Or, better yet: update your pretty old version of ROOT!

Cheers, Axel.