DIRC_occupancy.C

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// The following are special comments used by RootSpy to know
// which histograms to fetch for the macro.
//
// hnamepath: /occupancy/dirc_num_events
// hnamepath: /occupancy/dirc_tdc_pixel_N_occ
// hnamepath: /occupancy/dirc_tdc_pixel_S_occ
// hnamepath: /occupancy/dirc_tdc_pixel_N_occ_led
// hnamepath: /occupancy/dirc_tdc_pixel_S_occ_led
//
// e-mail: davidl@jlab.org
// e-mail: marki@jlab.org
// e-mail: tbritton@jlab.org
//

{
   // RootSpy saves the current directory and style before
   // calling the macro and restores it after so it is OK to
   // change them and not change them back.
        TDirectory *savedir = gDirectory;
   TDirectory *dir = (TDirectory*)gDirectory->FindObjectAny("occupancy");
   if(dir) dir->cd();

   TH2I *dirc_tdc_pixel_N_occ_led = (TH2I*)gDirectory->FindObjectAny("dirc_tdc_pixel_N_occ_led");
   TH2I *dirc_tdc_pixel_S_occ_led = (TH2I*)gDirectory->FindObjectAny("dirc_tdc_pixel_S_occ_led");
   TH2I *dirc_tdc_pixel_N_occ = (TH2I*)gDirectory->FindObjectAny("dirc_tdc_pixel_N_occ");
        TH2I *dirc_tdc_pixel_S_occ = (TH2I*)gDirectory->FindObjectAny("dirc_tdc_pixel_S_occ");

   // Just for testing
   if(gPad == NULL){
      TCanvas *c1 = new TCanvas("c1","DIRC Occupancy",600,400);
      c1->cd(0);
      c1->Draw();
      c1->Update();
   }
   if(!gPad) {savedir->cd(); return;}

   TCanvas *c1 = gPad->GetCanvas();
   c1->cd(0);
   c1->Clear();

   TPad *p1 = (TPad*)gDirectory->FindObjectAny("dirc_occ_pad1");
   if(!p1)p1 = new TPad("dirc_occ_pad1","p1",0.,0.5,1.,1.);
   p1->Draw();
   p1->cd();
   gStyle->SetOptStat(0);
   if(dirc_tdc_pixel_S_occ_led) dirc_tdc_pixel_S_occ_led->DrawCopy("colz");

   c1->cd(0);
   TPad *p2 = (TPad*)gDirectory->FindObjectAny("dirc_occ_pad2");
   if(!p2)p2 = new TPad("dirc_occ_pad2","p1",0.,0.,1.,0.5);
   p2->Draw();
   p2->cd();
   gStyle->SetOptStat(0);
   if(dirc_tdc_pixel_S_occ) dirc_tdc_pixel_S_occ->DrawCopy("colz");
}