[ns] Mobile nodes don't move in nam

[Shiyi Wu <Shiyi.Wu@eurecom.fr>]

Good morning,

I read your tutorial for ns and try running your example "wireless1.tcl"
in chapter IX Running Wireless Simulations in ns.

At the end of simulator, there are two result file : wireless1-out.tr
and wireless1-out.nam. The trace file is very big, however the nam file
is very small ( 637bytes)

I run nam wireless1-out.nam to see result. But these three nodes don't
move at all and have no traffics among them. I use is nam-1.0a8 and
ns-2.1b6.

Another question: how can i see the result of simple-wireless.tcl,
simple.tr, visuelly?

Thank you very much

Sincerely
Shiyi