# gmultierrors¶

Draw a graph with multiple y errors

Author: Simon Spies
This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, November 29, 2022 at 11:17 AM.

In [1]:
TCanvas *c1 = new TCanvas("c1", "A Simple Graph with multiple y-errors", 200, 10, 700, 500);
c1->SetGrid();
c1->GetFrame()->SetBorderSize(12);

const Int_t np = 5;
Double_t x[np]       = {0, 1, 2, 3, 4};
Double_t y[np]       = {0, 2, 4, 1, 3};
Double_t exl[np]     = {0.3, 0.3, 0.3, 0.3, 0.3};
Double_t exh[np]     = {0.3, 0.3, 0.3, 0.3, 0.3};
Double_t eylstat[np] = {1, 0.5, 1, 0.5, 1};
Double_t eyhstat[np] = {0.5, 1, 0.5, 1, 0.5};
Double_t eylsys[np]  = {0.5, 0.4, 0.8, 0.3, 1.2};
Double_t eyhsys[np]  = {0.6, 0.7, 0.6, 0.4, 0.8};

TGraphMultiErrors* gme = new TGraphMultiErrors("gme", "TGraphMultiErrors Example", np, x, y, exl, exh, eylstat, eyhstat);
gme->SetMarkerStyle(20);
gme->SetLineColor(kRed);
gme->GetAttLine(0)->SetLineColor(kRed);
gme->GetAttLine(1)->SetLineColor(kBlue);
gme->GetAttFill(1)->SetFillStyle(0);


Graph and x erros drawn with "APS" Stat Errors drawn with "Z" Sys Errors drawn with "5 s=0.5"

In [2]:
gme->Draw("APS ; Z ; 5 s=0.5");

c1->Update();


Draw all canvases

In [3]:
%jsroot on
gROOT->GetListOfCanvases()->Draw()