--- a/python/moving.py	Wed Feb 01 11:58:04 2017 -0500
+++ b/python/moving.py	Fri Feb 03 14:16:36 2017 -0500
@@ -1266,6 +1266,13 @@
         else:
             return None
 
+    def getNLongestFeatures(self, nFeatures = 1):
+        if self.features is None:
+            return []
+        else:
+            tmp = utils.sortByLength(self.getFeatures(), reverse = True)
+            return tmp[:min(len(tmp), nFeatures)]                                        
+        
     def getFeatureNumbers(self):
         '''Returns the number of features at each instant
         dict instant -> number of features'''