PAW to CINT/ROOT
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  PRELIMINARY COMMENTS:
  • This page gives the "translation" of some commonly used PAW commands into ROOT's interactive interpreter CINT. Its purpose is to show the (former) PAW user the basic syntax of CINT. You must take into account, however, that the performances of ROOT are best seen by using it as a OO framework linked with your own C++ applications.
  • Note that CINT allows for some shortcuts which are not valid in macros or compiled programmes: Object.Function is equivalent to Object->Function; TClass *obj = new TClass(...) can be abbreviated to obj = new TClass(...); and semicolons at the end of a command may be omitted.
  • Note also that some of the actions can be more easily performed by using the left button on the canvas or/and by using the Browser.
  • (This page is originally an idea of "The Primer ROOT Page").

    •  
    12 May 1998NEW!Need to go from ROOT to HBOOK ? Try our roo2h utility !

     

    PAW

     CINT/ROOT
     Functions:
     Functions:
     fun/plot sin(x) 100 0. 3.14   TF1 *f1 = new TF1("f1","sin(x)",0,10); 
     f1->Draw();
     fun2 10 sin(x)*sin(y) 100 0. 3.14 100 0. 3.14 
     histo/plot 10 surf4     		  TF2 *fun2 = new TF2("fun2","sin(x)*sin(y)",0.,3.14,0.,3.14); 
     fun2->Draw("surf4"); 
    Files:
    Files:
     histo/file 10 histos.hbook 
     histo/file 10 histos.hbook ! N 
     histo/file 10 histos.hbook ! U    		  TFile *hfile = new  TFile("histos.root"); 
     TFile *hfile = new  TFile("histos.root","new"); 
     TFile *hfile = new  TFile("histos.root","update");
     histo/list 10  hfile.ls(); (or just .ls)
     cd //lun10  hfile.cd();
     hrout 10  hfile->Write();
     close 10  hfile->Close();
    Histos:
    Histos:
     1-dim:  1-dim: 
     1d/crea 10 'title' nbins xlow xup  TH1F *h10 = new TH1F("h10","title",nbins,xlow,xup);
     histo/plot 10   h10->Draw();
     histo/plot 10 e1,s  h10->Draw("e1same");
     null xmin xmax ymin ymax 
     histo/plot 10 s    		  TH2F frame = new TH2F("frame","",ncx,xmin,xmax,ncy,ymin,ymax); 
     frame->Draw(); 
     h10->Draw("same")
     histo/op/add 10 11 12 a b  TH1F *h12 = new TH1F(*h10); 
     h12->Add(h10,h11,a,b);
     histo/fit 10 chopt     (chopt=G/pN/func/myfit.for/...)  h10->Fit("opt");   (opt=gaus/pN/myfunc/myfit.C/...)
     histo/fit 10(15.:25.) chopt    (chopt=G/pN/func/myfit.for/...)   h10->Fit("opt","R","",15,25);     (opt=gaus/pN/myfunc/myfit.C/...) 
     loca -i  h10->Integral();
     histo/del 10  h10->Delete();
     2-dim:  2-dim:
     2d/crea 20 'title' ncx xmin xmax ncy ymin ymax  TH2F *h20 = new TH2F("h20","title",ncx,xmin,xmax,ncy,ymin,ymax); 
     histo/plot 20 chopt (chopt=box/col/cont/...)  h20->Draw("opt");  (opt = box/col/cont/...)
     min 20 5 
     max 20 10    		  h20->SetMinimum(5); 
     h20->SetMaximum(10);
     histo/proj 20 
     histo/plot 20.prox     		  h20->ProjectionX("Xproj",); 
     Ntuples:
     Trees:
     ntuple/create 100 ' ' 3 ' ' 1024 x y z   TTree *t100 = new TTree("t100","Tree 100","z:y:x"); 
     ntuple/print 100   t100->Print(); 
     ntuple/scan 100  t100->Scan();
     ntuple/plot 100.x   t100->Draw("x"); 
     ntuple/plot 100.x x>0   t100->Draw("x","x>0");
     ntuple/plot 100.x ! ! ! ! s  t100->Draw("x","","same");
     ntuple/plot 100.y%x   t100->Draw("y:x"); 
     ntuple/plot 100.z%y%x   t100->Draw("z:y:x"); 
     ntuple/plot 100.x*x+y*y   t100->Draw("x*x+y*y");
     ntuple/proj 10 100.x   t100->Draw("x>>h10"); 
     ntuple/uwfnc 100 file.for  t100->MakeCode("file.root"); 
     Windows:
     Canvas:
     (Open HIGZ window)  TCanvas *c1 = new TCanvas("c1","title",sizex,sizey); 
     next  c1->Clear();
     (Refresh changes in window)  c1->Update();
     zone 1 2 
     histo/plot 1 
     histo/plot 2     		  c1->Divide(1,2); 
     c1_1->cd(); 
     h1->Draw(); 
     c1_2->Draw(); 
     c1_2->cd(); 
     h2->Draw();
     opt logy 
     opt liny    		  c1->SetLogy(); 
     c1->SetLogy(0);
     fortran/file 66 graph.ps   (or:   graph.eps) 
     meta -66 -111   (or:   -113)
     picture/plot 
     fortran/close 66     		  c1->Draw(); 
     c1->Print("graph.ps");
     or:   c1->Print("graph.eps");
     (Create "last.kumac")  c1->Print("graph.C"); 
     c1->Print("graph.root");
     Primitives:
     Primitives:
     text 0.5 0.5 "TEXT" 0.35 45  TText *t1 = new TText(0.5,0.5,"TEXT"); 
     t1->SetTextSize(0.35); 
     t1->SetTextAngle(45); 
     t1->Draw(); 
     line 0.05 0.05 0.95 0.95   TLine *line1 = new TLine(0.05,0.05,0.95,0.95); 
     line1->Draw(); 
     arrow 5. 5. 10. 10. 0.3   TArrow *arrow1 = new TArrow(5.,5.,10.,10.,0.03,">"); 
     arrow1->Draw();
     Other useful commands:
     Other useful commands:
     exec macro.kumac  .x macro.kumac 
     shell (command)  .! (command)
     exit  .q
     ldir  .ls
     cd  .pwd()
     mdir subdir  dir.mkdir("subdir")  (dir=gROOT,hfile, ...)
     cd dir  dir.cd()   or   .cd("hfile.root"); 
     cd //PAWC  gROOT.cd()
     lcdir  .which
     mess "Welcome"  printf("Welcome\n");
     (Load a file)  .L myfit.C
     trace on  .s
     (PAW++ mode)  TBrowser *b = new TBrowser
     
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    Copyright © 1996,1997,1998 Groupe TAPS au GANIL
    This document http://ganp185.in2p3.fr/nof/paw2root.shtml has been modified on 12-May-1998 by David d'Enterria