Added changes to include no of groups in InteHEAD

src/opm/output/eclipse/DoubHEAD.cpp

@@ -375,8 +375,7 @@ namespace {
 // ---------------------------------------------------------------------
 
 Opm::RestartIO::DoubHEAD::DoubHEAD()
-    : data_(Index::NUMBER_OF_ITEMS, 0.0)
-    //: data_(Index::NUMBER_OF_ITEMS, -1.0e20)
+    : data_(Index::NUMBER_OF_ITEMS, -1.0e20)
 {
     // Numbers below have unknown usage, values have been determined by
     // experiments to be constant across a range of reference cases.

src/opm/parser/eclipse/EclipseState/Schedule/Schedule.cpp

@@ -1715,6 +1715,25 @@ namespace Opm {
         return groups;
     }
 
+    std::vector< const Group* > Schedule::getGroups(size_t timeStep) const {
+      
+	if (timeStep >= m_timeMap.size()) {
+            throw std::invalid_argument("Timestep to large");
+        }
+        
+        auto defined = [=]( const Group& g ) {
+            return g.hasBeenDefined( timeStep );
+        };
+	
+        std::vector< const Group* > groups;
+
+        for( const auto& group : m_groups ) {
+	    if( !defined( group ) ) continue;
+	    groups.push_back( &group );
+	}
+        return groups;
+    }
+	
     void Schedule::addWellToGroup( Group& newGroup, Well& well , size_t timeStep) {
         const std::string currentGroupName = well.getGroupName(timeStep);
         if (currentGroupName != "") {