From 57b9ebca5165351326592a3949a4079877e24c32 Mon Sep 17 00:00:00 2001
From: Roman Zeyde <roman.zeyde@gmail.com>
Date: Fri, 29 Aug 2014 20:58:35 +0300
Subject: [PATCH] recv: plot prefix also as a function of time

---
 amodem/recv.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/amodem/recv.py b/amodem/recv.py
index c88379f..e9074e7 100644
--- a/amodem/recv.py
+++ b/amodem/recv.py
@@ -97,9 +97,13 @@ class Receiver(object):
         S = common.take(symbols, len(train.prefix)).squeeze() * gain
         sliced = np.round(S)
         self.pylab.figure()
+        self.pylab.subplot(121)
         self._constellation(S, sliced, 'Prefix')
 
         bits = np.array(np.abs(sliced), dtype=int)
+        self.pylab.subplot(122)
+        self.pylab.plot(np.abs(S))
+        self.pylab.plot(train.prefix)
         if any(bits != train.prefix):
             raise ValueError('Incorrect prefix')