Scott Sampson wrote: > > Hi, > > I want to superimpose a scatter plot on a frame and then draw a function > on top, so I do the following: > > gPad->SetLogy(); > gPad->SetLogx(); > > gPad->DrawFrame(0.01,400,1.0,90000); > gPad->Update(); > h2da->Draw("Q2jbc:xjbc>>histo","Q2jbc>400 && yjbc<0.95","SAME"); > gPad->Update(); > > TF1 *fun1 = new TF1("fun1","(300*300*x)",0.001,1); > fun1->SetLineWidth(2); > fun1->SetLineStyle(2); > fun1->DrawCopy("SAME"); > gPad->Update(); > > There are a few things I would like to change: > > 1) change the marker size and style > 2) add labels to the x and y axes > 3) superimpose another scatter plot on top with a different marker style > > How can I do these easily? I've tried a number of approaches, but none > have worked fully. Thanks, > > Scott Hi Scott, I have modified your macro to do what you want. Rene Brun { TCanvas *c1 = new TCanvas("c1"); gPad->SetLogy(); gPad->SetLogx(); // gPad->DrawFrame(0.01,400,1.0,90000); TH2F *h2 = new TH2F("h2","",40,0.01,1,40,400,90000); h2->Draw(); h2->GetXaxis()->SetTitle("X title"); h2->GetYaxis()->SetTitle("Y title"); gPad->Update(); h2da->SetMarkerStyle(20); h2da->SetMarkerSize(0.4); h2da->Draw("Q2jbc:xjbc>>histo","Q2jbc>400 && yjbc<0.95","SAME"); gPad->Update(); TF1 *fun1 = new TF1("fun1","(300*300*x)",0.001,1); fun1->SetLineWidth(2); fun1->SetLineStyle(2); fun1->DrawCopy("SAME"); gPad->Update(); // change ntuple marker style/size again and draw again }
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