Differences

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--- soft:root [2021/07/30 04:49] – [TF1] Ce Zhang
+++ soft:root [2023/05/24 09:51] (current) – [ROOT study] Ce Zhang
@@ Line 1: / Line 1: @@
 =====ROOT study=====
+==== Divide ====
+<code>
+hHitTime_Ratio[i] = new TH1F(*hHitTime_Num[i]);
+hHitTime_Ratio[i]->SetName("hFRSignal");
+hHitTime_Ratio[i]->Divide(hHitTime_Den[i]);
+</code>
+==== Sub Canvas and Pads ====
+<code>
+TCanvas *c1 = new TCanvas(“c1”, “c1”, w, h);
+c1->SetWindowSize( w+(w-c1->GetWw()), h+(h-c1->GetWh()) );
+c1->Divide(2, 1); // … or … gPad->Divide(2, 1);
+TVirtualPad *c1_1 = c1->cd(1); // enter the first pad
+gPad->Divide(2, 2); // … or … c1_1->Divide(2, 2);
+// enter the 4 sub-pads and do stuff
+c1_1->cd(1); // … or … (c1->cd(1))->cd(1);
+(new TText(0.1, 0.5, “c1 … 1 … 1”))->Draw(); gPad->Update();
+c1_1->cd(2); // … or … (c1->cd(1))->cd(2);
+(new TText(0.1, 0.5, “c1 … 1 … 2”))->Draw(); gPad->Update();
+c1_1->cd(3); // … or … (c1->cd(1))->cd(3);
+(new TText(0.1, 0.5, “c1 … 1 … 3”))->Draw(); gPad->Update();
+c1_1->cd(4); // … or … (c1->cd(1))->cd(4);
+(new TText(0.1, 0.5, “c1 … 1 … 4”))->Draw(); gPad->Update();
+</code>
 ==== TF1 ====