Hi Kay, You should draw your histograms with option "e1" see : http://root.cern.ch/root/htmldoc/THistPainter.html#THistPainter:Paint Rene Brun Kay Ulbrich wrote: > > Hello! > > When executing a macro an excerpt from which is shown below, I get no > horizontal end bars on the error bars, although I have used > SetEndErrorSize(10) in rootlogon.C (and verified it in the macro via > gStyle->GetEndErrorSize()). The values are drawn properly, error bars > are shown, too. > > // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> > // Code snippet: > > TH1D *histos[2][12][6]; > > // ************************************************** > // [ reading the histograms with errors from a file ] > // ************************************************** > > for(unsigned obs_cnt=Ann; obs_cnt<=Ask; obs_cnt++) { > linestyle=1; > asymm_corr_nocorr_graph->cd(panel++); > > asymm_corr_nocorr_legend[obs_cnt]=new TLegend(0.57, 0.8, 1, 1); > > asymm_corr_nocorr_legend[obs_cnt]->AddEntry(histos[goodpico][input_bc][obs_cnt], > "A", "PL"); > > histos[goodpico][input_bc][obs_cnt]->SetLineStyle(linestyle++); > histos[goodpico][input_bc][obs_cnt]->SetMarkerStyle(24); > histos[goodpico][input_bc][obs_cnt]->Draw(); > > histos[wrongpico][input_bc][obs_cnt]->SetLineStyle(linestyle++); > asymm_corr_nocorr_legend[obs_cnt]->AddEntry(histos[wrongpico][input_bc][obs_cnt], > "B", "PL"); > histos[wrongpico][input_bc][obs_cnt]->SetMarkerStyle(25); > histos[wrongpico][input_bc][obs_cnt]->Draw("SAME"); > > histos[goodpico][input_nbc][obs_cnt]->SetLineStyle(linestyle++); > asymm_corr_nocorr_legend[obs_cnt]->AddEntry(histos[goodpico][input_nbc][obs_cnt], > "C", "PL"); > histos[goodpico][input_nbc][obs_cnt]->SetMarkerStyle(28); > histos[goodpico][input_nbc][obs_cnt]->Draw("SAME"); > > asymm_corr_nocorr_legend[obs_cnt]->Draw(); > } > asymm_corr_nocorr_graph->Update(); > } > > // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< > > Thank you for suggestions, > Kay > >
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