Possibly you are trying to retrieve context subscription results when there aren't any. The client throws Exceptions without any error message in this case (helpful messages added in the development version). This was the only way I could reproduce an error. Please see if you get a better error with the development version. Otherwise I need at least the stack traces from your crash (client and server).
regards, Jakob 2018-01-03 17:30 GMT+01:00 Kaths, Jakob <[email protected]>: > Hey, > > > > thanks a lot for your answer. I checked the Python example and adapted it > to my needs and it worked. I then prepared the minimal example for C++ and > while doing that, I think I found the solution. However, I still didn’t > fully understand why… Maybe you could give me a little hint, just for > understanding. My subscription to both vehicles and persons around a > vehicle works fine now. If I only subscribe to persons though, the program > crashes straight after starting it. So, if I comment line 66 it crashes > (which is what I did in my not-minimal-example and why I asked for help), > if I comment line 67 it works and if I don’t comment either of those two > lines, it works, too. > > > > You can find the cpp-file here: > > https://syncandshare.lrz.de/dl/fiWxH8FERhgLwXaDorAyFmW1/SumoConnect.cpp > > > > Thanks for the amazing help here! > > > > Jakob Kaths > > > > > > *Von:* [email protected] [mailto:[email protected]] > *Im Auftrag von *Jakob Erdmann > *Gesendet:* Mittwoch, 20. Dezember 2017 09:32 > *An:* Sumo project User discussions <[email protected]> > *Betreff:* Re: [sumo-user] Context Subscription of a Vehicle to Values of > Persons (TraCI API C++) > > > > Hello, > > subscribing to persons around an object and subscribing to things around a > person should be working. (at least it does in our tests since version > 0.31.0). > > You may take a look at the tests at https://github.com/DLR-TS/ > sumo/tree/master/tests/complex/traci/contextSubscriptions > > Can send a small scenario where it fails for you? > > regards, > > Jakob > > > > 2017-12-19 17:59 GMT+01:00 Kaths, Jakob <[email protected]>: > > Hello! > > > > I was wondering if it’s possible to retrieve values of pedestrians in SUMO > by subscription. I know, that in Context Subscription in the Wiki ( > http://sumo.dlr.de/wiki/TraCI/Object_Context_Subscription) pedestrians > are not mentioned. However, I found the corresponding value > (CMD_GET_PERSON_VARIABLE 0xae) in the TraCIConstants.h and tried to > subscribe, but it failed. Is there a possibility to retrieve position, > angle, speed etc. from pedestrians via subscription without modelling them > as vehicles? If not, is this planned for the future or could you give a > hint of how to implement this? > > > > Thanks in advance! > > > Jakob > > > > > > -- > > Dipl.-Ing. Jakob Kaths > > > > Technische Universität München > Ingenieurfakultät Bau Geo Umwelt > Lehrstuhl für Verkehrstechnik > [email protected] > > > > > _______________________________________________ > sumo-user mailing list > [email protected] > To change your delivery options, retrieve your password, or unsubscribe > from this list, visit > https://dev.eclipse.org/mailman/listinfo/sumo-user > > > > _______________________________________________ > sumo-user mailing list > [email protected] > To change your delivery options, retrieve your password, or unsubscribe > from this list, visit > https://dev.eclipse.org/mailman/listinfo/sumo-user > >
_______________________________________________ sumo-user mailing list [email protected] To change your delivery options, retrieve your password, or unsubscribe from this list, visit https://dev.eclipse.org/mailman/listinfo/sumo-user
