Thanks again for your reply,

I have seen 
https://sumo.dlr.de/docs/Tools/Sumolib.html#parse_vehicles_and_their_route_edges_in_a_route_file
 when I was querying sumolib
But it is more inclined to disassemble routing files and coordinate
conversion. I want to know the turning direction of the route

There is a getDirection() function in the class Connection of sumolib, but
what I don’t understand is how to use the routing path or edge as input to
determine the turning direction. (
https://sumo.dlr.de/pydoc/sumolib.net.connection.html)

Many thanks,
Yun

Jakob Erdmann <[email protected]> 於 2020年12月1日 週二 下午6:24寫道:

> see
>
> https://sumo.dlr.de/docs/Tools/Sumolib.html#parse_vehicles_and_their_route_edges_in_a_route_file
>
> https://sumo.dlr.de/docs/Tools/Sumolib.html#import_a_network_and_retrieve_nodes_and_edges
>
> Am Di., 1. Dez. 2020 um 05:22 Uhr schrieb 謝昀宸 <[email protected]>:
>
>> Thank you for your reply
>> I read some documents of sumolib but still don't understand how to use it
>>
>> ex: dir = fromEdge.getConnections(toEdge)[0].getDirection()
>> The getConnections is a function of sumolib.net.edge.Edge, but I don’t
>> know how to set attributes like fromedge and toedge and then get their
>> direction
>> Could you please explain more?
>>
>> Many thanks,
>> Yun
>>
>>
>>
>> Jakob Erdmann <[email protected]> 於 2020年11月24日 週二 下午10:47寫道:
>>
>>> You can use sumolib to read the turning direction for each network
>>> connection. All you need to do is parse the route file and look up a
>>> connection for each pair of successive route edges: dir =
>>> fromEdge.getConnections(toEdge)[0].getDirection()
>>>
>>> Am Di., 24. Nov. 2020 um 15:19 Uhr schrieb 謝昀宸 <[email protected]>:
>>>
>>>> Hello,
>>>> I want to record the left and right turn behavior or the number of
>>>> turns of the vehicle in a route
>>>> Do Traci or other function libraries provide similar functions?
>>>>
>>>> Many thanks,
>>>> Yun
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