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Date: Thu, 22 Feb 2007 14:32:26 -0800
From: Leslie Cheung <lccheung@usc.edu>
Subject: cs551: hw2 xgraph format
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Hi class,

I got a question during my office hour regarding hw2 (you might want to 
check back when you start working on hw2). In hw2, you are asked to plot 
size of the TCP congestion window using xgraph.

A student asked me how you should format your data and plot it using 
xgraph. You need to write a Tcl script to tell ns-2 output the data in 
the following format.

[time1] [congestion window size at time1]
[time2] [congestion window size at time2]
...

For example,

0 1
0.005 1
0.010 1
0.015 2
0.020 2
...


--Leslie