void ratiobrun2() {
    TGaxis::SetMaxDigits(2);
    TH1F *h1 = new TH1F("h1","test1",100,-3,3);
    h1->FillRandom("gaus",9000000);
    h1->GetXaxis()->SetLabelFont(63); //font in pixels
    h1->GetXaxis()->SetLabelSize(16); //in pixels
    h1->GetYaxis()->SetLabelFont(63); //font in pixels
    h1->GetYaxis()->SetLabelSize(16); //in pixels
    TH1F *h2 = new TH1F("h2","test2",100,-3,3);
    h2->FillRandom("gaus",500);
    TCanvas *c1 = new TCanvas("c1","example",600,700);
    TPad *pad1 = new TPad("pad1","pad1",0,0.3,1,1);
    pad1->SetBottomMargin(0);
    pad1->Draw();
    pad1->cd();
    TH1F* h3 = (TH1F*)h1->DrawCopy();
    //h3->SetMinimum(-500);
    h2->Draw("same");
    c1->cd();


    TPad *pad2 = new TPad("pad2","pad2",0,0,1,0.3);
    pad2->SetTopMargin(0);
    pad2->Draw();
    pad2->cd();
    h1->Sumw2();
    h1->SetStats(0);
    h1->Divide(h2);
    h1->SetMarkerStyle(21);
    h1->Draw("ep");
    //c1->cd();
}

//void ratiobrun2() {
//    TH1F *h1 = new TH1F("h1","test1",100,-3,3);
//    h1->FillRandom("gaus",200000);
//    h1->GetXaxis()->SetLabelFont(63); //font in pixels
//    h1->GetXaxis()->SetLabelSize(16); //in pixels
//    h1->GetYaxis()->SetLabelFont(63); //font in pixels
//    h1->GetYaxis()->SetLabelSize(16); //in pixels
//    TH1F *h2 = new TH1F("h2","test2",100,-3,3);
//    h2->FillRandom("gaus",100000);
//    TCanvas *c1 = new TCanvas("c1","example",600,700);
//    TPad *pad1 = new TPad("pad1","pad1",0,0.3,1,1);
//    pad1->SetBottomMargin(0);
//    pad1->Draw();
//    pad1->cd();
//
//    TH1F *h3=(TH1F*)h1->DrawCopy();
//    h3->SetMinimum(-100);
//    h2->Draw("same");
//    c1->cd();
//    TPad *pad2 = new TPad("pad2","pad2",0,0,1,0.3);
//    pad2->SetTopMargin(0);
//    pad2->Draw();
//    pad2->cd();
//    h1->Sumw2();
//    h1->SetStats(0);
//    h1->Divide(h2);
//    h1->SetMarkerStyle(21);
//    h1->Draw("ep");
//    c1->cd();
//}