Hello, I am trying to plot error bars on the data points using object TGraphErrors. Float_t x3[] = {}; Float_t y3[] = {}; Float_t ex3[] = {}; Float_t ey3[] = {}; gr3 = new TGraphErrors(n3,x3,y3,ex3,ey3); gr3->SetMarkerColor(kBlack); gr3->SetLineWidth(3); gr3->SetMarkerStyle(21); gr3->Draw("LP"); How do I get the error bars with an upper end and descending arrow at the lower head. Any help will be appreciated. Best regards, Tarun ---------------------------------------------------------- Tarun Kanti Ghosh Vanderbilt University Tel: (615) 343 1709 Fax: (615) 343 7263 URL: http://www.phenix.bnl.gov/~tghosh/tarun.html
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