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Reference Guide
gerrors.C File Reference

Detailed Description

View in nbviewer Open in SWAN Draw a graph with error bars

void gerrors() {
TCanvas *c1 = new TCanvas("c1","A Simple Graph with error bars",200,10,700,500);
c1->SetGrid();
c1->GetFrame()->SetBorderSize(12);
const Int_t n = 10;
Float_t x[n] = {-0.22, 0.05, 0.25, 0.35, 0.5, 0.61,0.7,0.85,0.89,0.95};
Float_t y[n] = {1,2.9,5.6,7.4,9,9.6,8.7,6.3,4.5,1};
Float_t ex[n] = {.05,.1,.07,.07,.04,.05,.06,.07,.08,.05};
Float_t ey[n] = {.8,.7,.6,.5,.4,.4,.5,.6,.7,.8};
gr->SetTitle("TGraphErrors Example");
gr->SetMarkerColor(4);
gr->SetMarkerStyle(21);
gr->Draw("ALP");
c1->Update();
}
Author
Rene Brun

Definition in file gerrors.C.

ex
Double_t ex[n]
Definition: legend1.C:17
n
const Int_t n
Definition: legend1.C:16
TGraph::SetTitle
virtual void SetTitle(const char *title="")
Change (i.e.
Definition: TGraph.cxx:2324
TGraph::Draw
virtual void Draw(Option_t *chopt="")
Draw this graph with its current attributes.
Definition: TGraph.cxx:760
Float_t
float Float_t
Definition: RtypesCore.h:57
Int_t
int Int_t
Definition: RtypesCore.h:45
x
Double_t x[n]
Definition: legend1.C:17
gr
TGraphErrors * gr
Definition: legend1.C:25
gerrors
Definition: gerrors.py:1
y
Double_t y[n]
Definition: legend1.C:17
ey
Double_t ey[n]
Definition: legend1.C:17
TGraphErrors
Definition: TGraphErrors.h:26
TCanvas
Definition: TCanvas.h:23
c1
return c1
Definition: legend1.C:41