how to generate graph from trace file in ns2?

Question

I am facing a problem in generating xgraph from .tr file. The error message is like this:

Error in file `voip.tr' at line 610:

Unknown line type

Problems found with input data.

The format of .tr file is like this:

+ 1 0 1 sctp 56 -------I 0 0.0 3.0 1 -1 2 65535 65535
- 1 0 1 sctp 56 -------I 0 0.0 3.0 1 -1 2 65535 65535
r 1.01224 0 1 sctp 56 -------I 0 0.0 3.0 1 -1 2 65535 65535
+ 1.01224 1 3 sctp 56 -------I 0 0.0 3.0 1 -1 2 65535 65535
- 1.01224 1 3 sctp 56 -------I 0 0.0 3.0 1 -1 2 65535 65535
r 1.02448 1 3 sctp 56 -------I 0 0.0 3.0 1 -1 2 65535 65535
+ 1.02448 3 1 sctp 56 -------I 0 3.0 0.0 1 -1 3 65535 65535
- 1.02448 3 1 sctp 56 -------I 0 3.0 0.0 1 -1 3 65535 65535
r 1.03672 3 1 sctp 56 -------I 0 3.0 0.0 1 -1 3 65535 65535
+ 1.03672 1 0 sctp 56 -------I 0 3.0 0.0 1 -1 3 65535 65535
- 1.03672 1 0 sctp 56 -------I 0 3.0 0.0 1 -1 3 65535 65535
r 1.04896 1 0 sctp 56 -------I 0 3.0 0.0 1 -1 3 65535 65535
+ 1.04896 0 1 sctp 36 -------I 0 0.0 3.0 1 -1 4 65535 65535
- 1.04896 0 1 sctp 36 -------I 0 0.0 3.0 1 -1 4 65535 65535
r 1.0604 0 1 sctp 36 -------I 0 0.0 3.0 1 -1 4 65535 65535
+ 1.0604 1 3 sctp 36 -------I 0 0.0 3.0 1 -1 4 65535 65535

I have used command like this in ubuntu in ns2.

xgraph voip.tr

So how can I generate graph from the trace file?

Answer 1

You cannot give your trace file as a direct input to Xgraph. you have to give file with only two lines like

1 5

5 89

8 98 here first row is x axis 2nd is y axis for example save this file as graph.tr

now you can execute using xgraph graph.tr here instead of using random values you have to use your QOS valuse such as number of packets received or sent like that..

Answer 2

xgraph can only be used with .xgr files. While executing the awk command add this (watch for the greater than symbol):

.... > anyname.xgr

Now you can use xgraph to plot, the command is:

xgraph anyname.xgr