Index: trunk/MagicSoft/Mars/mjobs/MDataSet.h
===================================================================
--- trunk/MagicSoft/Mars/mjobs/MDataSet.h	(revision 7488)
+++ trunk/MagicSoft/Mars/mjobs/MDataSet.h	(revision 7492)
@@ -53,4 +53,12 @@
     }
 
+    Bool_t HasSequence(UInt_t num, const TArrayI &seq) const
+    {
+        for (int i=0; i<seq.GetSize(); i++)
+            if ((UInt_t)seq[i]==num)
+                return kTRUE;
+        return kFALSE;
+    }
+
 public:
     MDataSet(Int_t num=(UInt_t)-1) : fNumAnalysis(num) { }
@@ -89,4 +97,8 @@
 
     Bool_t HasOffSequences() const { return GetNumSequencesOff()>0; }
+
+    Bool_t HasOffSequence(UInt_t num) const { return HasSequence(num, fNumSequencesOff); }
+    Bool_t HasOnSequence(UInt_t num) const  { return HasSequence(num, fNumSequencesOn); }
+    Bool_t HasSequence(UInt_t num) const    { return HasOnSequence(num) || HasOffSequence(num); }
 
     UInt_t GetNumAnalysis() const { return fNumAnalysis; }