Awesome, I got it
Instead of a Person class for pedestrians, all I need to do is just write
new functions for TraCICommandInterface.
std::list<std::string> TraCICommandInterface::getPersonIds()
{
    return genericGetStringList(CMD_GET_PERSON_VARIABLE, "", ID_LIST,
RESPONSE_GET_PERSON_VARIABLE);
}
Coord TraCICommandInterface::getPersonPosition(std::string personId)
{
    return genericGetCoord(CMD_GET_PERSON_VARIABLE, personId, VAR_POSITION,
RESPONSE_GET_PERSON_VARIABLE);
}
==========
The first one would return all people. The second one will get the
coordination of an arbitrary individual.
Thank you very much. It helps me a lot


On Sat, Apr 23, 2022 at 7:40 AM Thanhnt Nguyen <thanhnt....@gmail.com>
wrote:

> Thank you, Dominik S.Buse
> I run the veins_inet_pedestrians example and it works. It gives me some
> ideas for declaring a "person" class.
> However, I could not establish C++ class for VeinsInetPerson. My steps
> include:
> 1. In VeinsInetPerson.*ned*, I write:  @class(veins::VeinsInetPerson);
> 2. I declare a C++ class named VeinsInetPerson
> 3. Declare a .h file in which the namespace of the class is veins, and
> this class uses namespace omnetpp
> 4. In .cc file, implement the code.
> And as running as Omnet++ simulation, the IDE reports error: cannot
> convert 'veins::VeinsInetPerson*' to 'omnetpp::cObject*' in initialization
> I search the Internet for the error  to "'omnetpp::cObject*' in
> initialization" but I found nothing :(
> Any help will be appreciated. Thank you in advance
>
> PS: I attached three files NED, .CC and .H
>
>
> On Fri, Apr 22, 2022 at 4:25 PM Dominik S. Buse <b...@ccs-labs.org> wrote:
>
>> Hi,
>>
>> you may also want to take a look at this pull request to veins:
>> https://github.com/sommer/veins/pull/148
>>
>> It included subscription support for pedestrians. It seemed to have
>> worked, yet was to complex to get merged into Veins. But you may be able to
>> gain some ideas or salvage some code.
>>
>>
>> On 22.04.22 10:05, Jakob Erdmann wrote:
>>
>> You'll have to patch TraCICommandInterface to add this method. The code
>> is easily adaptable from other entities that provide a position (i.e. Poi)
>> On the implementation side, it should look like this:
>>
>> Coord TraCICommandInterface::Person::getPosition()
>> {
>> return traci->genericGetCoord(CMD_GET_PERSON_VARIABLE, personId,
>> VAR_POSITION, RESPONSE_GET_PERSON_VARIABLE);
>> }
>>
>> Adding a pull-request against https://github.com/sommer/veins may help
>> out future Veins users.
>>
>> Am Fr., 22. Apr. 2022 um 09:50 Uhr schrieb Thanhnt Nguyen <
>> thanhnt....@gmail.com>:
>>
>>> Thank you.
>>> I suppose "traci" is an attribute of DemoBaseApplLayer class. In this
>>> class "traci" is an instance of TraCICommandInterface.
>>> However the TraCICommandInterface class has no attribute named "person"
>>> How could I access it?
>>>
>>>
>>> On Fri, Apr 22, 2022 at 9:26 AM Jakob Erdmann <namdre.s...@gmail.com>
>>> wrote:
>>>
>>>> The default way to write position information is with --fcd-output.
>>>> If you need the information at runtime, you can call
>>>> traci.person.getPosition(personID)
>>>> The list of all person ids can be obtained with
>>>> traci.person.getIDList() (This includes all persons generated by a
>>>> personFlow)
>>>>
>>>> Am Fr., 22. Apr. 2022 um 09:20 Uhr schrieb Thanhnt Nguyen <
>>>> thanhnt....@gmail.com>:
>>>>
>>>>> I found a quick hack to get coordinates of all pedestrians in
>>>>> personFlow.
>>>>> In the source code of SUMO, edit the file: GUIEdge.cpp. More
>>>>> specifically, find the statement:
>>>>> person->drawGL(s);
>>>>> and then write a new line: std::cout<<person->getPosition()<<std::endl;
>>>>> It works, the position will be printed as sumo-gui runs alone.
>>>>> However, a new problem arises: My project needs positions to be
>>>>> available while the simulation is running. But the data of position is not
>>>>> printed as choosing "Run as Omnet++ simulation". The simulation should end
>>>>> and a user should close the Qtenv, the data would be available in the
>>>>> terminal. I tried other ways (such as writing a file) but it doesn't
>>>>> change: data only is printed after a user closes Qtenv.
>>>>> _______________________________________________
>>>>> sumo-user mailing list
>>>>> sumo-user@eclipse.org
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>>>>>
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>>>>
>>>
>>>
>>> --
>>> Nguyen Tien Thanh
>>> Department of Software Engineering
>>> School of Information and Communication Technology (SoICT,
>>> http://www.fit.hut.edu.vn)
>>> Hanoi University of Technology (HUT, http://www.hut.edu.vn)
>>> 1 DaiCoViet Road, Hanoi, Vietnam
>>> Tel: +84-4-8682595/8683730 Fax +84-4-8692906
>>> Mobile: +84987768886
>>> E-mail: than...@soict.hut.edu.vn
>>>            ntth...@it-hut.edu.vn
>>>            thanhnt....@gmail.com
>>> Website: www.fit.hut.edu.vn/~thanhnt
>>> <http://www.fit.hut.edu.vn/%7Ethanhnt>
>>> _______________________________________________
>>> sumo-user mailing list
>>> sumo-user@eclipse.org
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>>> https://www.eclipse.org/mailman/listinfo/sumo-user
>>>
>>
>> _______________________________________________
>> sumo-user mailing listsumo-u...@eclipse.org
>> To unsubscribe from this list, visit 
>> https://www.eclipse.org/mailman/listinfo/sumo-user
>>
>> --
>> Dominik S. Buse M.Sc.
>> PhD Candidate at Data Communications and Networking Group (TKN), TU Berlin, 
>> Germany
>> Researcher at Software Innovation Campus Paderborn, Paderborn University, 
>> Germanyhttp://www.tkn.tu-berlin.de/team/buse/
>>
>> _______________________________________________
>> sumo-user mailing list
>> sumo-user@eclipse.org
>> To unsubscribe from this list, visit
>> https://www.eclipse.org/mailman/listinfo/sumo-user
>>
>
>
> --
> Nguyen Tien Thanh
> Department of Software Engineering
> School of Information and Communication Technology (SoICT,
> http://www.fit.hut.edu.vn)
> Hanoi University of Technology (HUT, http://www.hut.edu.vn)
> 1 DaiCoViet Road, Hanoi, Vietnam
> Tel: +84-4-8682595/8683730 Fax +84-4-8692906
> Mobile: +84987768886
> E-mail: than...@soict.hut.edu.vn
>            ntth...@it-hut.edu.vn
>            thanhnt....@gmail.com
> Website: www.fit.hut.edu.vn/~thanhnt
> <http://www.fit.hut.edu.vn/%7Ethanhnt>
>


-- 
Nguyen Tien Thanh
Department of Software Engineering
School of Information and Communication Technology (SoICT,
http://www.fit.hut.edu.vn)
Hanoi University of Technology (HUT, http://www.hut.edu.vn)
1 DaiCoViet Road, Hanoi, Vietnam
Tel: +84-4-8682595/8683730 Fax +84-4-8692906
Mobile: +84987768886
E-mail: than...@soict.hut.edu.vn
           ntth...@it-hut.edu.vn
           thanhnt....@gmail.com
Website: www.fit.hut.edu.vn/~thanhnt <http://www.fit.hut.edu.vn/%7Ethanhnt>
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