files were not being added in correct order - now fixed!

include/vklib/VKSortedWriter.h

@@ -47,6 +47,12 @@ namespace VEIKONKONE {
              * Close sorter.
              */
             void close();
+            
+            /*
+             * Save meta data to output file.
+             * @param n Meta data.
+             */
+            void saveInfo(TNamed& n);
         
         private: 
             void setup();

sort.cpp

@@ -45,7 +45,7 @@ int main( int argc, char* argv[] ){
     {
         vector<string> input;
         findFiles(run, input);
-
+        
         if (input.size() == 0) {
             cout << "Unable to find any files with run number " << run << endl;
             return 0;
@@ -183,13 +183,16 @@ void findFiles(int run, vector<string>& input)
 			fname = file->GetName();
 			if (!file->IsDirectory()) {
 				if (fname.EndsWith(Form("%04d_ch000.txt", run))) {
-					input.push_back(fname.Data());
+					if (input.size() < 1) input.resize(1);
+					input[0] = fname.Data();
 				}
 				else if (fname.EndsWith(Form("%04d_ch001.txt", run))) {
-					input.push_back(fname.Data());
+					if (input.size() < 2) input.resize(2);
+					input[1] = fname.Data();
 				}
 				else if (fname.EndsWith(Form("%04d_ch002.txt", run))) {
-					input.push_back(fname.Data());
+					if (input.size() < 3) input.resize(3);
+					input[2] = fname.Data();
 				}
 			}
 		}

source/VKSortedWriter.cpp

@@ -104,3 +104,9 @@ void VKSortedWriter::clear()
     }
 }
 
+
+void VKSortedWriter::saveInfo(TNamed& n)
+{
+    n.Write();
+}
+

source/VKSorter.cpp

@@ -24,6 +24,10 @@ VKSorter::VKSorter(vector<shared_ptr<VKRawReader>>& _readers, string output, Dou
     
     writer = make_unique<VKSortedWriter> (n, output);
 
+    // log coincidence window to file
+    TNamed info("VetoWindow", Form("%.1f us", window));
+    writer->saveInfo(info);
+
     trigger = vector<bool>(n, true);
 
     a0 = vector<double>(n, 0);