finding position of neighbor nodes in a node

[bahar]

Hi all
I'm working on ns3 and I want to change the way we choose MPR set. for
this purpose I must have all neighbors position and their velocity in
a special node, but the only thing I have about those neighbors is
their address like nb_tuple. I'll be thankful if someone tell me the
way for finding velocity and position of those nodes.Thanks in
advance.
Bests
Bahar

[Rafael Roque]

You can set the initial NodeContainter as static and use it. But keep in mind that in a real world you should implement something (not easy) to discover the nodes positions and velocities without this information.

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Rafael Roque Aschoff

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MSc in Computer Science / UFPE - www.cin.ufpe.br

[bahar]

Hi
I was wondering if I can work with mobile nodes and also can find
their position. I know if I have a pointer to a node I can use
Getobject and find it's position, but I want to know is there any way
to find it without having a pointer to node.
Bests
Bahar

On Sep 3, 7:54 pm, Rafael Roque <roque.raf...@gmail.com> wrote:
> You can set the initial NodeContainter as static and use it. But keep in
> mind that in a real world you should implement something (not easy) to
> discover the nodes positions and velocities without this information.
>
>
>
> On Fri, Sep 3, 2010 at 9:45 AM, bahar <h.baharloi...@gmail.com> wrote:
> > Hi all
> > I'm working on ns3 and I want to change the way we choose MPR set. for
> > this purpose I must have all neighbors position and their velocity in
> > a special node, but the only thing I have about those neighbors is
> > their address like nb_tuple. I'll be thankful if someone tell me the
> > way for finding velocity and position of those nodes.Thanks in
> > advance.
> > Bests
> > Bahar
>
> > --
> > You received this message because you are subscribed to the Google Groups
> > "ns-3-users" group.
> > To post to this group, send email to ns-3-...@googlegroups.com.
> > To unsubscribe from this group, send email to

> > ns-3-users+...@googlegroups.com<ns-3-users%2Bunsu...@googlegroups.com>
> > .

[Mathieu Lacage]

On Fri, Sep 3, 2010 at 18:45, bahar <h.baha...@gmail.com> wrote:
> Hi
> I was wondering if I can work with mobile nodes and also can find
> their position. I know if I have a pointer to a node I can use
> Getobject and find it's position, but I want to know is there any way
> to find it without having a pointer to node.

No.

Mathieu
--
Mathieu Lacage <mathieu...@gmail.com>

[bahar]

Hi
so mathieu how can I find nodes position I need it. I just need to
have the position of all neighbors of a node in OLSR so I can
calculate their distance and use neighbors velocity.
Thanks in advance.
Bests
Bahar

On Sep 4, 10:29 am, Mathieu Lacage <mathieu.lac...@gmail.com> wrote:

> On Fri, Sep 3, 2010 at 18:45, bahar <h.baharloi...@gmail.com> wrote:
> > Hi
> > I was wondering if I can work with mobile nodes and also can find
> > their position. I know if I have a pointer to a node I can use
> > Getobject and find it's position, but I want to know is there any way
> > to find it without having a pointer to node.
>
> No.
>
> Mathieu
> --

> Mathieu Lacage <mathieu.lac...@gmail.com>

[bahar]

Hi
It should be sth like in real world which we can have all nodes
position. Also I need node's velocity and it's the base of my project
and without it I can't do anything. please give me a hint how to do
it. Thanks.

[Mathieu Lacage]

On Sat, Sep 4, 2010 at 19:05, bahar <h.baha...@gmail.com> wrote:
> Hi
> so mathieu how can I find nodes position I need it. I just need to
> have the position of all neighbors of a node in OLSR so I can
> calculate their distance and use neighbors velocity.

Maybe you should iterate through the nodes in NodeList and get their
positiono until you find the one you want.

[bahar]

Hi
I've already done it and it gave the error:NodeList not declared in
this scope.So I added the "ns3/node-module.h" and then it give me the
error:"Do not include ns3 module aggregator headers from other
modules; these are meant only for end user scripts."
so t seems this NodeList doesn't work in olsr-routing-protocol so
would you please tell me what can I do. Thanks in advance.
Bests
Bahar

On Sep 5, 3:50 pm, Mathieu Lacage <mathieu.lac...@gmail.com> wrote:

> On Sat, Sep 4, 2010 at 19:05, bahar <h.baharloi...@gmail.com> wrote:
> > Hi
> > so mathieu how can I find nodes position I need it. I just need to
> > have the position of all neighbors of a node in OLSR so I can
> > calculate their distance and use neighbors velocity.
>
> Maybe you should iterate through the nodes in NodeList and get their
> positiono until you find the one you want.
>
> Mathieu
> --

> Mathieu Lacage <mathieu.lac...@gmail.com>

[Mathieu Lacage]

On Sun, Sep 5, 2010 at 19:23, bahar <h.baha...@gmail.com> wrote:
> I've already done it and it gave the error:NodeList not declared in
> this scope.So I added the "ns3/node-module.h" and then it give me the
> error:"Do not include ns3 module aggregator headers from other
> modules; these are meant only for end user scripts."

You should try this then:
#include "ns3/node-list.h"

> so t seems this NodeList doesn't work in olsr-routing-protocol so
> would you please tell me what can I do. Thanks in advance.

Mathieu
--
Mathieu Lacage <mathieu...@gmail.com>

[bahar]

Hi
I added this :
for(int i=0 ;i<20 ; i++)
{
Ptr <Ipv4> myipv4= NodeList::GetNode(i)-
>GetObject<Ipv4>();
int Interface = myipv4-
>GetInterfaceForAddress( nb_tuple.neighborMainAddr) ;
if( Interface != -1)
{
Vector cPosition = myipv4->GetObject<MobilityModel> ()-
>GetPosition ();
cpx = myipv4->GetObject<MobilityModel> ()->GetPosition
().x;
cpy = myipv4->GetObject<MobilityModel> ()->GetPosition
().y;
cpz = myipv4->GetObject<MobilityModel> ()->GetPosition
().z;
float itVelocity = myipv4->GetObject<MobilityModel> ()-
>GetVelocity ();
}
}
and for line :int Interface = myipv4-
>GetInterfaceForAddress( nb_tuple.neighborMainAddr) ;
and gives me thi error:error: request for member ‘neighborMainAddr’ in
‘nb_tuple’, which is of non-class type ‘const
ns3::olsr::NeighborTuple*’
would you please help me with this error.Thanks in advance.
Bests
Bahar

On Sep 5, 10:42 pm, Mathieu Lacage <mathieu.lac...@gmail.com> wrote:

> Mathieu Lacage <mathieu.lac...@gmail.com>

[Mathieu Lacage]

On Mon, Sep 6, 2010 at 14:11, bahar <h.baha...@gmail.com> wrote:
>             int Interface = myipv4-
>>GetInterfaceForAddress( nb_tuple.neighborMainAddr) ;

> and gives me thi error:error: request for member ‘neighborMainAddr’ in
> ‘nb_tuple’, which is of non-class type ‘const
> ns3::olsr::NeighborTuple*’

Read carefully the compiler messages and you will figure out what is
wrong: in this case, my vision goggles that can see through the
internet tell me that you should be using '->' instead of '.'

It really seems to me that starting to program C++ by using ns-3 is a
bad idea: you should seriously learn from a decent C++ book.