X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=MUON%2FAliMUONTrackerDataCompareDialog.cxx;h=4f342866cf454ab9d25ea04d484d5da975da846f;hb=95153273156d2401573870c81190c9bff2bdeeec;hp=e12d431339e16d84f7c7af21afb7eb8f0038239c;hpb=fc2293be3210f0436f281ea4bd047546feed3c79;p=u%2Fmrichter%2FAliRoot.git

diff --git a/MUON/AliMUONTrackerDataCompareDialog.cxx b/MUON/AliMUONTrackerDataCompareDialog.cxx
index e12d431339e..4f342866cf4 100644
--- a/MUON/AliMUONTrackerDataCompareDialog.cxx
+++ b/MUON/AliMUONTrackerDataCompareDialog.cxx
@@ -245,13 +245,16 @@ AliMUONTrackerDataCompareDialog::CompareData(const char* d1name,
     suffix = "ARD";
   }
   
-  TString basename = fBasename->GetText(); 
-  
-  AliMUONVTrackerData* d = CompareData(*d1,*d2,Form("%s:%s",basename.Data(),suffix.Data()),difffunction);
-  
-  AliMUONVTrackerDataMaker* dw = new AliMUONTrackerDataWrapper(d);
+  if ( difffunction ) 
+  {
+    TString basename = fBasename->GetText(); 
   
-  AliMUONPainterDataRegistry::Instance()->Register(dw);
+    AliMUONVTrackerData* d = CompareData(*d1,*d2,Form("%s:%s",basename.Data(),suffix.Data()),difffunction);
+    
+    AliMUONVTrackerDataMaker* dw = new AliMUONTrackerDataWrapper(d);
+    
+    AliMUONPainterDataRegistry::Instance()->Register(dw);
+  }
 }
 
 //______________________________________________________________________________