void treeviewer() { //=========Macro generated by ROOT version5.32/00 //=========for tree "t1" (Sat May 5 17:31:13 2012) //===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("t1"); TFile *tv_file = (TFile*)gROOT->GetListOfFiles()->FindObject("data/musr_50703.root"); if (!tv_tree) { if (!tv_file) tv_file = new TFile("data/musr_50703.root"); if (tv_file) tv_tree = (TTree*)tv_file->Get("t1"); if(!tv_tree) { printf("Tree %s not found", fTree->GetName()); return; } } treeview->SetTreeName("t1"); treeview->SetNexpressions(10); // Set expressions on axis and cut TTVLVEntry *item; // X expression item = treeview->ExpressionItem(0); item->SetExpression("save_z", "~save_z"); // Y expression item = treeview->ExpressionItem(1); item->SetExpression("save_ke", "~save_ke"); // Z expression item = treeview->ExpressionItem(2); item->SetExpression("", "-empty-"); // Cut expression item = treeview->ExpressionItem(3); item->SetExpression("save_detID>870&&save_particleID==-13", "~ScanAlongZ"); // Scan list item = treeview->ExpressionItem(4); item->SetExpression("", "Scan box"); // User defined expressions item = treeview->ExpressionItem(5); item->SetExpression("save_detID==902&&save_particleID==-13", "~SamplePosition", kTRUE); item = treeview->ExpressionItem(6); item->SetExpression("save_detID>870&&save_particleID==-13", "~ScanAlongZ", kTRUE); item = treeview->ExpressionItem(7); item->SetExpression("save_detID==890&&save_particleID==-13", "~TDAfterFoil", kTRUE); item = treeview->ExpressionItem(8); item->SetExpression("acos(save_pz/sqrt(save_px^2+save_py^2+save_pz^2))*180/3.14", "~AcosTheta", kFALSE); item = treeview->ExpressionItem(9); item->SetExpression("save_time-0.3152", "~TOFTDSample", 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(); }