--- a/python/events.py	Fri Apr 12 13:16:38 2013 -0400
+++ b/python/events.py	Fri Apr 12 15:22:00 2013 -0400
@@ -64,6 +64,12 @@
 
         # todo test for interaction instants and interval, compute indicators
 
+    def addVideoFilename(self,videoFilename):
+        self.videoFilename= videoFilename	
+
+    def addInteractionType(self,interactionType):
+	''' interaction types: conflict or collision if they are known'''
+        self.interactionType= interactionType			
 
 def createInteractions(objects):
     '''Create all interactions of two co-existing road users