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"# gr004_errors_asym\n",
"The errors for the x values are divided into low (left side of the marker) and high (right side of the marker) errors.\n",
"Similarly, for the y values, there are low (lower side of the marker) and high (upper side of the marker) errors.\n",
"\n",
"\n",
"\n",
"\n",
"**Author:** Miro Helbich \n",
"This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, May 19, 2026 at 08:37 PM."
]
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"TCanvas *c2 = new TCanvas(\"c2\",\"\", 700, 500);\n",
"\n",
"c2->SetGrid();\n",
"const Int_t npoints=3;\n",
"Double_t xaxis[npoints] = {1.,2.,3.};\n",
"Double_t yaxis[npoints] = {10.,20.,30.};\n",
"\n",
"Double_t exl[npoints] = {0.5,0.2,0.1}; //Lower x errors\n",
"Double_t exh[npoints] = {0.5,0.3,0.4}; //Higher x errors\n",
"Double_t eyl[npoints] = {3.,5.,4.}; //Lower y errors\n",
"Double_t eyh[npoints] = {3.,5.,4.}; //Higher y errors\n",
"\n",
"TGraphAsymmErrors *gr = new TGraphAsymmErrors(npoints,xaxis,yaxis,exl,exh,eyl,eyh); //Create the TGraphAsymmErrors object with data and asymmetrical errors\n",
"\n",
"gr->SetTitle(\"A simple graph with asymmetrical errors\");\n",
"gr->Draw(\"A*\"); //\"A\" = draw axes and \"*\" = draw markers at the points with error bars"
]
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"Draw all canvases "
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"gROOT->GetListOfCanvases()->Draw()"
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