EXPERT ROOT

void treeviewer() {

//=========Macro generated by ROOT version6.06/02

//=========for tree "cbmsim" (Wed Sep 13 16:01:21 2017)

//===This macro can be opened from a TreeViewer session after loading

//===the corresponding tree, or by running root with the macro name argument

   open_session();

}

open_session(void *p = 0) {

   gSystem->Load("libTreeViewer");

   TTreeViewer *treeview = (TTreeViewer *) p;

   if (!treeview) treeview = new TTreeViewer();

   TTree *tv_tree = (TTree*)gROOT->FindObject("cbmsim");

   TFile *tv_file = (TFile*)gROOT->GetListOfFiles()->FindObject("full.root");

   if (!tv_tree) {

      if (!tv_file) tv_file = new TFile("full.root");

      if (tv_file)  tv_tree = (TTree*)tv_file->Get("cbmsim");

      if(!tv_tree) {

         printf("Tree %s not found", fTree->GetName());

         return;

      }

   }

   treeview->SetTreeName("cbmsim");

   treeview->SetNexpressions(10);

//         Set expressions on axis and cut

   TTVLVEntry *item;

//   X expression

   item = treeview->ExpressionItem(0);

   item->SetExpression("BeamDetMWPCPoint.fELoss", "~BeamDetMWPCPoint.fELoss");

//   Y expression

   item = treeview->ExpressionItem(1);

   item->SetExpression("", "-empty-");

//   Z expression

   item = treeview->ExpressionItem(2);

   item->SetExpression("", "-empty-");

//   Cut expression

   item = treeview->ExpressionItem(3);

   item->SetExpression("BeamDetMWPCPoint.fPlaneNb == 2 && BeamDetMWPCPoint.fMWPCNb == 2 && BeamDetMWPCPoint.fPid > 3000", "~BeamDetMWPCPoint.fPlaneNb");

//         Scan list

   item = treeview->ExpressionItem(4);

   item->SetExpression("", "Scan box");

//         User defined expressions

   item = treeview->ExpressionItem(5);

   item->SetExpression("BeamDetMWPCPoint.fPlaneNb == 2 && BeamDetMWPCPoint.fMWPCNb == 2 && BeamDetMWPCPoint.fPid > 3000", "~name", kTRUE);

   item = treeview->ExpressionItem(6);

   item->SetExpression("", "-empty-", kFALSE);

   item = treeview->ExpressionItem(7);

   item->SetExpression("", "-empty-", kFALSE);

   item = treeview->ExpressionItem(8);

   item->SetExpression("", "-empty-", kFALSE);

   item = treeview->ExpressionItem(9);

   item->SetExpression("", "-empty-", kFALSE);

   item = treeview->ExpressionItem(10);

   item->SetExpression("", "-empty-", kFALSE);

   item = treeview->ExpressionItem(11);

   item->SetExpression("", "-empty-", kFALSE);

   item = treeview->ExpressionItem(12);

   item->SetExpression("", "-empty-", kFALSE);

   item = treeview->ExpressionItem(13);

   item->SetExpression("", "-empty-", kFALSE);

   item = treeview->ExpressionItem(14);

   item->SetExpression("", "-empty-", kFALSE);

//--- session object

   tv_session = new TTVSession(treeview);

   treeview->SetSession(tv_session);

//--- Connect first record

   tv_session->First();

}