{ TFile* f = new TFile("hodtest.root"); TCanvas *c1 = new TCanvas("c1", "Drift Chamber Drift Distance", 800, 800); c1->Divide(2, 6); TH1F* h[12]; h[0] = sdc1u1_dd; h[1] = sdc1u2_dd; h[2] = sdc1x1_dd; h[3] = sdc1x2_dd; h[4] = sdc1v1_dd; h[5] = sdc1v2_dd; h[6] = sdc2u1_dd; h[7] = sdc2u2_dd; h[8] = sdc2x1_dd; h[9] = sdc2x2_dd; h[10] = sdc2v1_dd; h[11] = sdc2v2_dd; for(Int_t ih=0;ih<12;ih++) { Int_t ipad = 2*(ih%6)+1 + ih/6; cout << ipad << endl; c1->cd(ipad); h[ih]->SetFillColor(kBlue); h[ih]->SetFillStyle(3354); h[ih]->Draw(); } }