pet merger seams to work

diff --git a/tests_dav/clitkMergeRootFiles.cxx b/tests_dav/clitkMergeRootFiles.cxx
index b3aa4c689a19cdcd3a406e4439700e149f12763e..4bd0634a763afd5e84cc234a4b0e5613472d6b9a 100644 (file)
--- a/tests_dav/clitkMergeRootFiles.cxx
+++ b/tests_dav/clitkMergeRootFiles.cxx
@@ -26,6 +26,19 @@
 using std::endl;
 using std::cout;
 
+struct PetInputFile
+{
+       string filename;
+       double mean_time;
+};
+
+bool sort_pet_input_file(const PetInputFile& a, const PetInputFile& b)
+{
+       return a.mean_time<b.mean_time;
+};
+
+typedef std::vector<PetInputFile> PetInputFiles;
+
 //-----------------------------------------------------------------------------
 int main(int argc, char * argv[]) {
 
@@ -42,17 +55,38 @@ int main(int argc, char * argv[]) {
 
   { // Detect Pet output
          bool all_pet_output = true;
-         Strings input_filenames;
+         PetInputFiles pet_input_files;
          for (uint i=0; i<args_info.input_given; i++) 
          {
                  const char* filename = args_info.input_arg[i];
-                 input_filenames.push_back(filename);
+                 PetInputFile input_file;
+                 input_file.filename = filename;
                  TFile* handle = TFile::Open(filename,"READ");
                  assert(handle);
                  TTree* hits = dynamic_cast<TTree*>(handle->Get("Hits"));
                  TTree* singles = dynamic_cast<TTree*>(handle->Get("Singles"));
                  const bool is_pet_output = (hits!=NULL) && (singles!=NULL);
-                 cout << "testing " << filename << " is_pet_output " << is_pet_output << endl;
+                 cout << "testing " << filename << " is_pet_output " << is_pet_output;
+
+                 if (is_pet_output)
+                 {
+                         double time;
+                         double time_accum = 0;
+                         singles->SetBranchAddress("time",&time);
+                         size_t total = singles->GetEntries();
+                         for (size_t kk=0; kk<total; kk++)
+                         {
+                                 singles->GetEntry(kk);
+                                 time_accum += time;
+                         }
+                                 
+                         input_file.mean_time = time_accum/total;
+                         pet_input_files.push_back(input_file);
+                         cout << " mean_time " << input_file.mean_time;
+                 }
+
+                 cout << endl;
+
                  handle->Close();
                  delete handle;
                  all_pet_output &= is_pet_output;
@@ -62,6 +96,14 @@ int main(int argc, char * argv[]) {
          if (all_pet_output)
          {
                  GateMergeManager manager(args_info.fastmerge_given,args_info.verbose_arg,true,0,"");
+
+                 cout << "sorting input file using singles time" << endl;
+                 std::sort(pet_input_files.begin(),pet_input_files.end(),sort_pet_input_file);
+
+                 Strings input_filenames;
+                 for (PetInputFiles::const_iterator iter=pet_input_files.begin(); iter!=pet_input_files.end(); iter++)
+                         input_filenames.push_back(iter->filename);
+
                  manager.StartMergingFromFilenames(input_filenames,args_info.output_arg);
                  return 0;
          }