GiriWiki

以前のリビジョンの文書です

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====== ヒストグラムを規格化(Scale)して、さらにエラーバーをつけたい ====== ---- ヒストグラムの規格化では、TH1::Draw の"E"オプションを使えば良い。 ===== サンプルコード ===== <code c_mac> // マクロ test.C のサンプルコード void test() { TH1D *h1 = new TH1D("h1","h1",100,-10,10); TH1D *h2 = new TH1D("h2","h2",100,-10,10); TCanvas *c = new TCanvas("c","c",700,600); h1->FillRandom("gaus",10000); h2->FillRandom("gaus",1000); TH1D *h1e = (TH1D*)h1->Clone("h1e"); TH1D *h2e = (TH1D*)h2->Clone("h2e"); h2e->Sumw2(); h2->Scale(10); h2e->Scale(10); h1->SetLineColor(2); h2->SetLineColor(4); h1e->SetLineColor(2); h2e->SetLineColor(4); h1->Draw(); h1e->Draw("same e1"); h2->Draw("same"); h2e->Draw("same e1"); gPad->Modified(); gPad->Update(); } </code>