Gabriele Cosmo
57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
// -------------------------------------------------------------------
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// $Id: plot.C 70323 2013-05-29 07:57:44Z gcosmo $
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// -------------------------------------------------------------------
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//
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// *********************************************************************
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// To execute this macro under ROOT after your simulation ended,
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// 1 - launch ROOT (usually type 'root' at your machine's prompt)
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// 2 - type '.X plot.C' at the ROOT session prompt
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// *********************************************************************
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{
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gROOT->Reset();
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gStyle->SetPalette(1);
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gROOT->SetStyle("Plain");
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gStyle->SetOptStat(000000);
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c1 = new TCanvas ("c1","",60,60,500,500);
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c1->Divide(1,1);
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FILE * fp = fopen("wvalue.txt","r");
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Float_t E,nbioni,snbioni,w,sw;
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Int_t ncols = 0;
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Int_t nlines = 0;
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TNtuple *ntuple = new TNtuple("ntuple","w","E:nbioni:snbioni:w:sw");
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while (1)
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{
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ncols = fscanf(fp,"%f %f %f %f %f",&E,&nbioni,&snbioni,&w,&sw);
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if (ncols < 0) break;
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ntuple->Fill(E,nbioni,snbioni,w,sw);
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nlines++;
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}
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fclose(fp);
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c1->cd(1);
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gPad->SetLogx();
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gPad->SetLogy();
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TH2F * h2 = new TH2F ("h2","",2,9.99,1e3,2,9.99,1e3);
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h2->Draw();
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ntuple->SetMarkerStyle(20);
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ntuple->SetMarkerSize(1.);
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ntuple->Draw("w:E","","LPsame");
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h2->GetXaxis()->SetLabelSize(0.025);
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h2->GetYaxis()->SetLabelSize(0.025);
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h2->GetXaxis()->SetTitleSize(0.035);
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h2->GetYaxis()->SetTitleSize(0.035);
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h2->GetXaxis()->SetTitleOffset(1.4);
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h2->GetYaxis()->SetTitleOffset(1.4);
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h2->GetXaxis()->SetTitle("E (eV)");
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h2->GetYaxis()->SetTitle("W (eV)");
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}
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