THStack drawing options: not working

[acgc99]

Hi,
I want this kind of graph:

But I get this:

I want a solid line between the bins of the same histogram. I tried to use the “L” option for drawing.

Here is the code:

void fuse_hists(){
	
	TString filename1 = "run_03/run_03.root"; // CP-even
	
	TString hist1 = "h_Phi_q1_q2_t_tbarSM;1";
	
	TString filename2 = "run_04/run_04.root"; // CP-odd
	
	TString hist2 = "h_Phi_q1_q2_t_tbarSM;1";
	
	TString title = "\\phi_C (rad)";
	
	TString outFilePNG = "PhiC.png";
	
	TCanvas* c1 = new TCanvas("Name", "Title", 1280, 1024);
	
	THStack *hstack = new THStack("Name", "");	
	
	TFile* file1 = new TFile(filename1, "READ");
	TH1F* th1f1 = (TH1F*)file1->Get(hist1);
	th1f1->SetDirectory(nullptr);
	file1->Close();
	
	TFile* file2 = new TFile(filename2, "READ");
	TH1F* th1f2 = (TH1F*)file2->Get(hist2);
	th1f2->SetDirectory(nullptr);
	file2->Close();

	th1f1->Sumw2();
	th1f2->Sumw2();
	
	th1f1->SetLineColor(kBlack);
	th1f2->SetLineColor(kBlue);
	
	//normalize
	th1f1->Scale(1./th1f1->Integral());
	th1f2->Scale(1./th1f2->Integral());
	
	hstack-> Add(th1f1);
	hstack-> Add(th1f2);
	
	hstack->Draw("nostackb l");
	hstack->GetXaxis()->SetTitle(title);
	hstack->GetYaxis()->SetTitle("Normalized distribution");
	
	TLegend* legend = new TLegend(0.7, 0.75, 0.9, 0.9);
	legend->AddEntry(th1f1, "CP-even", "l");//"fas"
	legend->AddEntry(th1f2, "CP-odd", "l");
	legend->Draw();
	
	
	gPad->Modified();
	gPad->Update();
	
	c1->Print(outFilePNG);
	
	
}

---

ROOT Version: 6.24/06
Platform: Debian
Compiler: Not Provided

---

[Wile_E_Coyote]

Try: hstack->Draw("hist nostack");

[acgc99]

Now the histogram is empty:

void fuse_hists(){
	
	TString filename1 = "run_03/run_03.root"; // CP-even
	
	TString hist1 = "h_Phi_q1_q2_t_tbarSM;1";
	
	TString filename2 = "run_04/run_04.root"; // CP-odd
	
	TString hist2 = "h_Phi_q1_q2_t_tbarSM;1";
	
	TString title = "\\phi_C (rad)";
	
	TString outFilePNG = "PhiC.png";
	
	TCanvas* c1 = new TCanvas("Name", "Title", 1280, 1024);
	
	THStack *hstack = new THStack("Name", "");	
	
	TFile* file1 = new TFile(filename1, "READ");
	TH1F* th1f1 = (TH1F*)file1->Get(hist1);
	th1f1->SetDirectory(nullptr);
	file1->Close();
	
	TFile* file2 = new TFile(filename2, "READ");
	TH1F* th1f2 = (TH1F*)file2->Get(hist2);
	th1f2->SetDirectory(nullptr);
	file2->Close();

	th1f1->Sumw2();
	th1f2->Sumw2();
	
	th1f1->SetLineColor(kBlack);
	th1f2->SetLineColor(kBlue);
	
	//normalize
	th1f1->Scale(1./th1f1->Integral());
	th1f2->Scale(1./th1f2->Integral());
	
	hstack-> Add(th1f1);
	hstack-> Add(th1f2);
	
	hstack->Draw("hist nostackb");
	hstack->GetXaxis()->SetTitle(title);
	hstack->GetYaxis()->SetTitle("Normalized distribution");
	
	TLegend* legend = new TLegend(0.7, 0.75, 0.9, 0.9);
	legend->AddEntry(th1f1, "CP-even", "l");//"fas"
	legend->AddEntry(th1f2, "CP-odd", "l");
	legend->Draw();
	
	
	gPad->Modified();
	gPad->Update();
	
	c1->Print(outFilePNG);
	
	
}

[couet]

try :

hstack->Draw("hist nostack");

(remove b)