Re #5294. Throw an exception if no groups are defined.

mantidproject · Jan 24, 2013 · 2c76a11 · 2c76a11
1 parent d8e6abf
commit 2c76a11
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/Code/Mantid/Framework/Algorithms/src/DiffractionFocussing2.cpp b/Code/Mantid/Framework/Algorithms/src/DiffractionFocussing2.cpp
@@ -141,6 +141,8 @@ void DiffractionFocussing2::exec()
   udet2group.clear();
   // std::cout << "(1) nGroups " << nGroups << "\n";
   groupWS->makeDetectorIDToGroupVector(udet2group, nGroups);
+  if (nGroups <= 0)
+    throw std::runtime_error("No groups were specified.");
   // std::cout << "(2) nGroups " << nGroups << "\n";
 
   //This finds the rebin parameters (used in both versions)