[ns] How to get a mobile node's current position

[Liceven]

Hi, today I find we could use tcl script to get a node's position.
codes like this:
      set n1 [$ns node]
     $ns set X_ 15.0
     $ns set Y_ 15.0
     $ns set Z_ 0.0
 ...
     set x_pos [$n1 set X_]
...
   'set x_pos [$n1 set X_]' this script could be used to get the x value of
n1's starting position. but it could not record the coordinate dynamically.
So, If I want to implement this dynamic function, what should i do? thanks
very much.
Liceven


Liceven wrote:
> 
> Hello,everyone:
>       I want to simulate a wireless scenario with two access points and a
> mobile node. This mobile node moves randomly, the question is how to
> calculate it's position like(x=?,y=?,z=0) at any given time. It could be
> better if you could give me an example. Of course, any suggestion is
> welcome.
>      Regards.
>      Liceven
> 

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