This is a MAJOR modification:

[u/mrichter/AliRoot.git] / PHOS / RecAna.C

diff --git a/PHOS/RecAna.C b/PHOS/RecAna.C
new file mode 100644 (file)
index 0000000..f6e73b4
--- /dev/null
+++ b/PHOS/RecAna.C
@@ -0,0 +1,32 @@
+#define RecAna_cxx
+#include "RecAna.h"
+
+void RecAna::Loop()
+{
+  //   In a Root session, you can do:
+  //      Root > .L RecAna.C
+  //      Root > RecAna t(filename)
+  //      Root > t.GetEvent(evt); // Fill t data members with event number evt
+  //      Root > t.Show();       // Show values of current event e
+  //      Root > t.Show(evt);     // Read and show values of entry evt
+  //      Root > t.Loop();       // Loop on all entries
+  //
+  
+  //     This is the loop skeleton
+  //       To read only selected branches, Insert statements like:
+  // METHOD1:
+  //    fTree->SetBranchStatus("*",0);  // disable all branches
+  //    fTree->SetBranchStatus("branchname",1);  // activate branchname
+  // METHOD2: replace line
+  //    fTree->GetEntry(i);  // read all branches
+  //by  b_branchname->GetEntry(i); //read only this branch
+  if (fTree == 0) return;
+  
+  Int_t nentries = Int_t(fTree->GetEntries());
+  
+   Int_t nbytes = 0, nb = 0;
+   for (Int_t i=0; i<nentries;i++) {
+      if (LoadTree(i) < 0) break;
+      nb = fTree->GetEntry(i);   nbytes += nb;
+   }
+}