EVE/alice-macros/tpc_hits.C

   1 // $Id$
   2
   3 Reve::PointSet*
   4 tpc_hits(const char *varexp    = "TPC2.fArray.fR:TPC2.fArray.fFi:TPC2.fArray.fZ",
   5          const char *selection = "TPC2.fArray.fR>80")
   6 {
   7   // Extracts 'major' TPC hits (not the compressed ones).
   8   // This gives ~2.5% of all hits.
   9
  10   AliRunLoader* rl =  Alieve::Event::AssertRunLoader();
  11   rl->LoadHits("TPC");
  12
  13   TTree* ht = rl->GetTreeH("TPC", false);
  14
  15   Reve::PointSet* points = new Reve::PointSet(Form("TPC Hits '%s'", selection));
  16   points->SetSourceCS(TPointSelectorConsumer::TVT_RPhiZ);
  17
  18   TPointSelector ps(ht, points, varexp, selection);
  19   ps.Select();
  20
  21   points->SetTitle(Form("N=%d", points->Size()));
  22   points->SetMarkerSize(.5);
  23   points->SetMarkerColor((Color_t)3);
  24
  25   gReve->AddRenderElement(points);
  26   gReve->Redraw3D();
  27
  28   return points;
  29 }