No line within filled errors and wrong X plotting range

[acharlet]

Hi, I’m trying to plot a few datas stored in a tree, to be visualized in a similar way as

I’m not yet at the point where I’ll put all the details, legends… But i want to plot these datas with a black line within the filled error zone, and with the same x range. However, my plot resembles this:

In my code, I followed an advice that was given to me: draw a blank histogram that fixes the limits of the canvas before drawing my data, but it doesn’t work.
Here is my code for the last pad (since it’s roughly the same in the 3 cases), I hope you’ll help me:

c1->cd(3);
TPad *p3 = (TPad *)(c1->cd(3));
p3->SetLogx();
p3->SetLogy();
TH1F *h3 = new TH1F("h3","",100,1e-10,1e-9);
h2->SetMaximum(2e-9);
h2->SetMinimum(6e-11);
h2->GetXaxis()->SetTitle("#eta");
h2->GetXaxis()->CenterTitle(true);
h2->SetLabelOffset(100.,"y");
h2->Draw();

Long64_t NLi = bbn->Draw("eta:Li6_H:sigma_Li6_H","","goff");
TGraphErrors *gr4 = new TGraphErrors(NLi, bbn->GetV1(), bbn->GetV2(), 0, bbn->GetV3());
gr4->SetLineColor(kBlack);
gr4->SetFillColor(kGreen);
gr4->Draw("CE3A");

Thanks

[Wile_E_Coyote]

Try: gr4->Draw(“CE3”);

[acharlet]

I did that for the last part (the green plot), and it is now blank:

[Wile_E_Coyote]

Check that “x” and “y” ranges of your “gr4” graph are similar to the actual axes’ ranges which are drawn (which originate from “h3” or “h2”?).

[acharlet]

I tried gr->GetXaxis()->SetRangeUser(1e-10,1e-9); and it worked but not for the multigraph (code of the multigraph and resulting plot below)

c1->cd(2);
TPad *p2 = (TPad *)(c1->cd(2));
p2->SetLogx();
p2->SetLogy();
TH1F *h2 = new TH1F("h2","",100,1e-10,1e-9);
h2->SetMaximum(1e-3);
h2->SetMinimum(5e-6);
h2->Draw();

TMultiGraph *mg = new TMultiGraph();
Long64_t NH2 = bbn->Draw("eta:H2_H:sigma_H2_H","","goff");
TGraphErrors *gr2 = new TGraphErrors(NH2, bbn->GetV1(), bbn->GetV2(), 0, bbn->GetV3());
gr2->GetXaxis()->SetRangeUser(1e-10,1e-9);
gr2->SetLineColor(kBlack);
gr2->SetFillColor(kBlue);
mg->Add(gr2,"CE4A");

Long64_t NHe3 = bbn->Draw("eta:He3_H:sigma_He3_H","","goff");
TGraphErrors *gr3 = new TGraphErrors(NHe3, bbn->GetV1(), bbn->GetV2(), 0, bbn->GetV3());
gr3->GetXaxis()->SetRangeUser(1e-10,1e-9);
gr3->SetLineColor(kBlack);
gr3->SetFillColor(kRed);
mg->Add(gr3,"CE4");

mg->Draw("E4A");