--- a/python/moving.py	Sat Nov 28 01:56:46 2009 -0500
+++ b/python/moving.py	Mon Nov 30 18:54:26 2009 -0500
@@ -106,14 +106,23 @@
         from matplotlib.pylab import plot
         plot(self.positions[0], self.positions[1])
 
+    def length(self):
+        return len(self.getXCoordinates())
+
+    def getXCoordinates(self):
+        return self.positions[0]
+
+    def getYCoordinates(self):
+        return self.positions[1]
+    
     def xBounds(self):
         # look for function that does min and max in one pass
-        return [min(self.positions[0]), max(self.positions[0])]
+        return [min(self.getXCoordinates()), max(self.getXCoordinates())]
     
     def yBounds(self):
         # look for function that does min and max in one pass
-        return [min(self.positions[1]), max(self.positions[1])]
-
+        return [min(self.getYCoordinates()), max(self.getYCoordinates())]
+    
     def norm(self):
         '''Returns the list of the norms at each instant'''
 #        def add(x, y): return x+y
@@ -139,9 +148,18 @@
         self.type = type
         # compute bounding polygon from trajectory
 
+    def length(self):
+        return self.timeInterval.length()
+
+    def getXCoordinates(self):
+        return self.positions.getXCoordinates()
+    
+    def getYCoordinates(self):
+        return self.positions.getYCoordinates()
+    
     def draw(self):
         self.positions.draw()
-
+    
     # def computeVelocities(self):
 
 # need for a class representing the indicators, their units, how to print them in graphs...