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Re: [sumo-dev] How to query for vehicle in a radius around a location [SEC=UNOFFICIAL]
Hello,
A frequent cause of invisible pois is alpha=0. You can easily check this by changing poi-coloring from "given" to "uniform" in the gui settings.
In our own tests, added pois are visible as expected.
Your subscription should be to the poi domain rather than the simulation domain:
traci.poi.subscribeContext(poiId, traci.constants.CMD_GET_VEHICLE_VARIABLE, 50)

regards,
Jakob


Am Di., 16. März 2021 um 23:42 Uhr schrieb Shiel, Christian (Contractor) <Christian.Shiel2@xxxxxxxxxxxxxxxxxx>:

UNOFFICIAL

Thanks Jakob,

 

I can add a poi using traci.poi.add(poiId, x,y, rgb).

I simulate and can see the poi in the list in the gui (although even if I change its size or colour I cannot see it visually on the map), and the location is correct.

I can see all the vehicles in the UI.

I can get all vehicles positions using traci.vehcile.getIDList() to confirm everything is there.

 

I try to get results using:

 

def run():

 

poiId = “555”

traci.poi.add(poiId, x,y, rgb)

traci.simulation.subscribeContext(poiId, traci.constants.CMD_GET_VEHICLE_VARIABLE, 50)

 

while traci.simulation.getMinExpectedNumber() > 0:

traci.simulationStep()

result = traci.simulation.getContextSubscriptionResults(poiId)

 

etc..

 

But result, its always empty.

 

Cheers

Chris

 

From: sumo-dev <sumo-dev-bounces@xxxxxxxxxxx> On Behalf Of Jakob Erdmann
Sent: Friday, 5 March 2021 5:55 PM
To: sumo developer discussions <sumo-dev@xxxxxxxxxxx>
Subject: Re: [sumo-dev] How to query for vehicle in a radius around a location [SEC=UNOFFICIAL]

 

 ⚠  EXTERNAL EMAIL: Do not click any links or open any attachments unless you trust the sender and know the content is safe.  ⚠.

Indirectly, yes. You can define a point-of-interest at the given location (traci.poi.add) and then perform a context subscription around that object.

 

regards,

Jakob

 

Am Fr., 5. März 2021 um 06:07 Uhr schrieb Shiel, Christian (Contractor) <Christian.Shiel2@xxxxxxxxxxxxxxxxxx>:

UNOFFICIAL

Using TraCi is it possible to query for vehicles at a point location with a radius?

Cheers

Chris

 

 

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