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Re: [sumo-user] Using GPS Trace Data for Route Definition
In sumo, each vehicle (identified by it's "id" ) has only one route. You cannot re-use the same id before this vehicle has left the simulation.
However, you can concatenate routes into one big route.
If you need to string together a series of routes while still keeping the output separate (i.e. a tripinfo output for each part) and you must ensure that the next route only starts after the first route has ended then you could define a person with a sequence of rides (https://sumo.dlr.de/docs/Specification/Persons.html)

Alternatively, you can use sumolib to find the edges. See https://sumo.dlr.de/docs/Tools/Sumolib.html#locate_nearby_edges_based_on_the_geo-coordinate

Am Do., 27. Aug. 2020 um 19:28 Uhr schrieb Chris Abraham <chrisbrhm@xxxxxxxxx>:
Thanks Jakob, it worked. However, the problem is that Duarouter creates *one* route from *all* the GPS coordinates. I want each subsequent pair of gps coordinates to generate a *new route*, but with the same vehicle. Is it possible?

Alternatively, is there a way for me to convert GPS coordinates to sumo edges from within Python? That way, I can construct my routes with a python xml-library, rather than using duarouter.

Chris

On Tuesday, 25 August 2020 13:22 Jakob wrote:
> Duarouter should create exactly one vehicle (including a route) per input
> trip. So if you define one trip per GPS trace it should work as expected
> (all coordinates except start and end would be in viaLonLat). Note, that
> the current approach of building routes from coordinates is quite sensitive
> to data errors (you may get better results if you do not include
> coordinates that are very close to each other).
>
> Am Di., 25. Aug. 2020 um 08:52 Uhr schrieb Chris Abraham <
> chrisbrhm@xxxxxxxxx>:
>
> > Hi all,
> >
> > I am trying to define a vehicle in SUMO using GPS trace data. I have GPS
> > datapoints of a vehicle, measured at 1 minute intervals (***EDIT***, 27
> > Aug: I have used a clustering algorithm to get gps-coordinates of the
> > vehicle's orgins and destinations). I want `duarouter` to automatically
> > route between each of the datapoints to create 1 long route file.
> >
> > I tried creating multiple `trip` definitions with `fromLonLat`, `toLonLat`
> > and `viaLonLat` attributes and passing these trip definitions to
> > `duarouter`. However, this caused multiple routes to be generated, rather
> > than one single route.
> >
> > I hope someone knows the correct approach.
> >
> > Chris
> > _______________________________________________
> > sumo-user mailing list
> > sumo-user@xxxxxxxxxxx
> > To unsubscribe from this list, visit
> > https://www.eclipse.org/mailman/listinfo/sumo-user
> >
>

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