hi
can anybody tell me how to make a graph like below in root???
regards and thanks for help
florian
(of cause without the snapshot window (stupid program…))
Try this example
void demo() {
const int N = 12;
double x[N] = {1, 2, 2.5, 3, 3.5,4.5, 6, 7, 8, 9, 11, 12};
double y[N] = {0.1,0.5,0.07,0.06,0.03,0.6,0.1,0.3,0.4,0.5, 0.6, 0.7};
double ex[N] = {0.05,0.05,0.05,0.05,0.05,0.06,0.05,0.05,0.05,0.05,0.05,0.05};
double ey[N] = {0.02,0.01,0.02,0.02,0.01,0.06,0.02,0.05,0.10,0.15,0.15,0.15};
const char* labels[N] = {
"(p-p)/h^{-}",
"#pi^{-}/#pi^{+}",
"#eta^{-}/#pi^{+}",
"4",
"5",
"6",
"7",
"8",
"9",
"10",
"11",
"#eta^{+}/#eta^{-}"
};
TCanvas *c1 = new TCanvas("c1");
c1->SetLogy();
c1->SetGridx();
c1->SetGridy();
TGraphErrors *gr = new TGraphErrors(N,x,y,ex,ey);
gr->SetMarkerStyle(21);
gr->SetMaximum(3);
gr->SetMinimum(4e-4);
gr->Draw("ap");
gr->GetYaxis()->SetTitle("particle ratios");
TLatex l;
l.SetTextSize(0.03);
l.SetTextAngle(90);
l.SetTextAlign(12);
for (int i=0;i<N;i++) {
l.DrawLatex(x[i],y[i]*1.3,labels[i]);
}
}
Rene
thats exactly what I want… thanks a lot
regards
flori
hi
I have a few more questions…
- How is it possible to get Markers like in the picture (the long black lines) because in TAttMarker I found only point like styles…
- how is it possible to set particle names like pi or eta on the x-axis? instead of other labeling…
- How can I change the label-step size of an axis, if I want for example only the highest and the lowest value (10 and 0 instead on 10,9,8,7,6,5,4,3,2,1).
- is there a good tutorial where I can find all this stuff, because there are only a few tutorials in the internet available and all of them are very basic…
thanks for help
best regards
florian
