add more HDF4 header info: counts.

src/classes/PRunDataHandler.cpp

@@ -2353,7 +2353,31 @@ Bool_t PRunDataHandler::ReadNexusFile()
       runData.SetStopDate(date);
     }
 
-    // get/set t0, firstGoodBin, lastGoodBin
+    // data with its metadata
+    int t0_bin{-1}, fgb{-1}, lgb{-1}, noOfHistos{-1}, histoLength{-1};
+    if (nxs_file->HasDataset("/run/histogram_data_1/counts")) {
+      auto count_ds = nxs_file->GetDataset<int>("/run/histogram_data_1/counts");
+      auto count = count_ds.GetData();
+      // get all necessary attributes
+      if (count_ds.HasAttribute("t0_bin"))
+        t0_bin = std::any_cast<int>(count_ds.GetAttribute("t0_bin"));
+      if (count_ds.HasAttribute("first_good_bin"))
+        fgb = std::any_cast<int>(count_ds.GetAttribute("first_good_bin"));
+      if (count_ds.HasAttribute("last_good_bin"))
+        lgb = std::any_cast<int>(count_ds.GetAttribute("last_good_bin"));
+      if (count_ds.HasAttribute("number"))
+        noOfHistos = std::any_cast<int>(count_ds.GetAttribute("number"));
+      if (count_ds.HasAttribute("length"))
+        histoLength = std::any_cast<int>(count_ds.GetAttribute("length"));
+      if (count.size() != noOfHistos*histoLength) {
+        std::cerr << std::endl << "**ERROR** nxH4::PNeXus data size error! count.size()=" << count.size() << ", #histos=" << noOfHistos << ", length=" << histoLength << "." << std::endl;
+        return false;
+      }
+      // fill dataSet - STILL MISSING
+    } else { // no data found
+      std::cerr << std::endl << "**ERROR** nxH4::PNeXus couldn't obtain data: '/run/histogram_data_1/counts' is missing." << std::endl;
+      return false;
+    }
 
 #endif
   } else { // HDF5