Drawing part of a TGraphErrors

From: Ann-Cecilie Larsen <a.c.larsen_at_fys.uio.no>
Date: Mon, 19 Feb 2007 17:24:22 +0100


Dear Rooters,

I am trying to plot only a part of a graph with error bars using the following statements in my macro:

// make graph

	TGraphErrors *gr_fg3 = new TGraphErrors 
(n,energy,fg3,xerr,fgerr3);	// for fg

// creating histogram (just for the axis)
TH2F *h1 = new TH2F("h1"," ",10,0.0,8.0,10,0.0,1.0); h1->Draw(); // draw axis gr_fg3->SetMarkerStyle(21); gr_fg3->SetMarkerSize(0.6); gr_fg3.DrawGraph(8,&gr_fg3->GetX()[5],&gr_fg3->GetY()[5],"P"); //
draw fg data

But the error bars disappear in the pad... Is there another function than DrawGraph that should be used with the TGraphErrors?

Cheers, Cecilie



Ann-Cecilie Larsen
Oslo Cyclotron Laboratory (http://ocl.uio.no/) Department of Physics, University of Oslo P.O.Box 1048 Blindern
N-0316 Oslo, Norway
Phone: +47 22 85 64 63 Fax: +47 22 85 64 22 E-mail: a.c.larsen_at_fys.uio.no
Received on Mon Feb 19 2007 - 17:24:36 CET

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