--- a/python/moving.py	Wed Jul 17 18:19:08 2013 -0400
+++ b/python/moving.py	Thu Jul 18 02:08:51 2013 -0400
@@ -687,6 +687,18 @@
     def play(self, videoFilename, homography = None):
         cvutils.displayTrajectories(videoFilename, [self], homography, self.getFirstInstant(), self.getLastInstant())
 
+    def speedDiagnostics(self, display = False):
+        from numpy import std
+        speeds = self.getSpeeds()
+        coef = utils.linearRegression(range(len(speeds)), speeds)
+        print(speeds[-2]-speeds[1], std(speeds), coef[0])
+        if display:
+            from matplotlib.pyplot import figure, plot
+            figure(1)
+            self.draw()
+            figure(2)
+            plot(list(self.getTimeInterval()), speeds)
+
     def getInstantsCrossingLane(self, p1, p2):
         '''Returns the instant(s)
         at which the object passes from one side of the segment to the other