TGraphErrors errors

[mugiwara]

Hello everybody,

I am Marios and i am newbie. I use root lately and have some questions.

1. i wanted to get rms/covariance/correlation/mean for a TGraphErrors . Looking at Class TGraphErrors i did not find something but while i was keep looking i discovered these information at Histograms( TH1). Then i tried (e.g. TGrapherrors->getRMS )and it worked even if it is not written at the class reference of TGraphErrors. Do you know why couldn’t i find them?maybe i was searching the wrong way? or maybe there is another class reference for these?

2. i also need the errors to these quantities.The information exists for histograms but this time it doesn’t work for graph. Is there some way to do this?

Any help would be appreciated,
Thank you very much,
Marios.

[Wile_E_Coyote]

TGraphErrors Class Reference -> List of all members

[mugiwara]

Wile_E_Coyote,thank you for your reply.

nice, this list helps , but still, there is a way to earn the values of these quantities but not a way to get their errors?

Marios

[Wile_E_Coyote]

See the source code of (for axis = 11, 12, 13):
TH1::GetMean
TH1::GetStdDev

[mugiwara]

Ok. So i will deform the source code (TH1) for my occasion (TGraphErrors)

Thank you very much for your answers Wlle_E_Coyote,
Marios.