Empty canvas issue

[nab]

Dear developers,

I am using different cuts on my data set, when I run this macro it will give no error but the canvas is empty. I want to plot selNonIsoMu_pt. Kindly check my macro to fix it.

Thanks

iso.cc (1.1 KB)
source file path : /afs/cern.ch/user/n/nmajeed/public

[couet]

it seems t2->Draw is not called … ca you comment the selection tests before and try again ?
(BTW continue in invalid outside of a loop)

[nab]

Still it is not working. It is showing in process but gives a empty canvas.

[couet]

If I do:

void iso()
{
   TFile *f = new TFile("May26_2.root");

   TTree *t2 = (TTree*)f->Get("demo/AnaTree");

   TCanvas *c1 = new TCanvas("c1","c1",800,600);

   TH1F *h1 = new TH1F("h1","hist_nonIsoMu_cuts",100,0,300);
   h1->GetXaxis()->SetTitle("selNonIsoMu_cuts_pt");
   h1->GetYaxis()->SetTitle("entries");

   t2->Draw("selNonIsoMu_pt >> h1","","Hist");

}

I get a non empty canvas

[nab]

yes it is working. But this is not working when I add these lines

void pt_eta_nonIsomu1() {

   TFile *f = new TFile("May26_2.root");

   TTree *t2 = (TTree*)f->Get("demo/AnaTree");

   TH2F *h2 = new TH2F("h2","hist_nonIsoMu",100,0,300,100,-3,3);
   h2->GetXaxis()->SetTitle("selNonIsoMu_pt");
   h2->GetYaxis()->SetTitle("selNonIsoMu_eta");
float selNonIsoMu_pt, selNonIsoMu_eta;
if(selNonIsoMu_pt>20) continue;
if(selNonIsoMu_eta<2.5) continue;
if(selNonIsoMu_idTight==0) continue;
if(selNonIsoMu_ismuon==0) continue;
if(selNonIsoMu_iso<0.12) continue;

   t2->Draw("selNonIsoMu_eta:selNonIsoMu_pt >> h2","","Hist");
}

[couet]

Yes, but, as I said, this code is not correct. With ROOT 6 it gives:

$ root pt_eta_nonIsomu1.C
   ----------------------------------------------------------------
  | Welcome to ROOT 6.09/03                    http://root.cern.ch |
  |                                   (c) 1995-2017, The ROOT Team |
  | Built for macosx64                                             |
  | From heads/master@v6-09-02-743-g8daaf5e, May 09 2017, 17:49:57 |
  | Try '.help', '.demo', '.license', '.credits', '.quit'/'.q'     |
   ----------------------------------------------------------------

root [0] 
Processing pt_eta_nonIsomu1.C...
In file included from input_line_9:1:
/Users/couet/Downloads/pt_eta_nonIsomu1.C:11:23: error: 'continue' statement not in loop statement
if(selNonIsoMu_pt>20) continue;
                      ^
/Users/couet/Downloads/pt_eta_nonIsomu1.C:12:25: error: 'continue' statement not in loop statement
if(selNonIsoMu_eta<2.5) continue;
                        ^
/Users/couet/Downloads/pt_eta_nonIsomu1.C:13:4: error: use of undeclared identifier 'selNonIsoMu_idTight'
if(selNonIsoMu_idTight==0) continue;
   ^
/Users/couet/Downloads/pt_eta_nonIsomu1.C:13:28: error: 'continue' statement not in loop statement
if(selNonIsoMu_idTight==0) continue;
                           ^
/Users/couet/Downloads/pt_eta_nonIsomu1.C:14:4: error: use of undeclared identifier 'selNonIsoMu_ismuon'
if(selNonIsoMu_ismuon==0) continue;
   ^
/Users/couet/Downloads/pt_eta_nonIsomu1.C:14:27: error: 'continue' statement not in loop statement
if(selNonIsoMu_ismuon==0) continue;
                          ^
/Users/couet/Downloads/pt_eta_nonIsomu1.C:15:4: error: use of undeclared identifier 'selNonIsoMu_iso'
if(selNonIsoMu_iso<0.12) continue;
   ^
/Users/couet/Downloads/pt_eta_nonIsomu1.C:15:26: error: 'continue' statement not in loop statement
if(selNonIsoMu_iso<0.12) continue;
                         ^
root [1] 

[nab]

Dear couet, I fixed this issue. I am not fill the containers in a loop that is why it was giving empty canvas.