RE: TGraphErrors

From: Ijaz Ahmed <Ijaz.Ahmed_at_cern.ch>
Date: Wed, 22 Sep 2010 13:09:29 +0200

Hi..
I am using GetMeanError method of TH1F class and SetPointError method of TGraphError class as below:

---

TH1F* fVertexZTPC=0x0;

fVzMeanTPC->SetPoint(npoint, runs[i], fVertexZTPC->GetMean());

    fVzMeanTPC->SetPointError(npoint, 0, fVertexZTPC->GetMeanError());

Ij az Ahmed
CIIT, Islamabad
mob#+923345349527
URL: http://iahmed.web.cern.ch/iahmed

-----Original Message-----
From: Olivier Couet
Sent: Wed 9/22/2010 1:04 PM
To: Ijaz Ahmed; roottalk (Mailing list discussing all aspects of the ROOT system.) Subject: RE: [ROOT] TGraphErrors

Hi,
GetMeanError is not a method of TGraphErrors. See the list of TGraphErrors' methods here: http://root.cern.ch/root/html/TGraphErrors.html Cheers,
Olivier
-----Original Message-----
From: owner-roottalk_at_root.cern.ch [mailto:owner-roottalk_at_root.cern.ch] On Behalf Of Ijaz Ahmed Sent: Wednesday, September 22, 2010 12:57 PM To: roottalk (Mailing list discussing all aspects of the ROOT system.) Subject: [ROOT] TGraphErrors

Hi...

I am getting the following error during compiling my root macro. Anybody can guess what going on wrong with it?.

---

Error: Can't call TGraphErrors::GetMeanError() in current scope readQAgrid_tracks.C:228: Possible candidates are...
(in TGraphErrors)
(in TGraph)

*** Interpreter error recovered ***

Ijaz Ahmed
CIIT, Islamabad
mob#+923345349527
URL: http://iahmed.web.cern.ch/iahmed Received on Wed Sep 22 2010 - 13:13:55 CEST