Re: [ns] nam and node movement

[John Mehringer <mehringe@ISI.EDU>]

Hi Giri,

If you are using wireless nodes then every node animation event in the 
tracefile will cause the nodes to move.  The node event is handled in 2 
places.
netmodel.cc:NetModel::handle(const TraceEvent& e, double now, int 
direction)
wnetmodel.cc:WirelessNetModel::handle(const TraceEvent& e, double now, 
int direction)

Both are under the case 'n': sections.  In WirelessNetModel there is an 
explicit call to move the nodes to whatever x,y location is passed in.
For example, the trace file event
  n -t 1.0 -s 1 -x 10.0 -y 10.0
will move the node to 10.0,10.0.  If you don't want movement you should 
keep passing in the same values to -x and -y on each node animation 
event.

- John


On Sunday, April 29, 2001, at 04:12  PM, Giridhari Dash wrote:

> Hi,
> I found in the nam animation some nodes  jump over to other place(1ms 
> run interval). Any reason for that? Also I did not find a jump in the 
> position for those nodes in the trace file (not nam trace).
>
> Another question when I set log movement interval 0.5 sec, I get some 
> node movements recorded in between.
>
>    t      Ni  X     Y
> M 57.00000 7 445.96 328.44
> M 57.50000 7 448.42 324.01
> M 58.00000 7 450.88 319.58
> M 58.07716 7 451.26 318.90
> M 58.50000 7 451.26 318.90
> Is there any other cause for this movement? Again out of a whole bunch 
> of 20 nodes only couple of nodes do that.
>
> I appreciate any help..
> Giri
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