[OSRM-talk] New way weight

Romain NKONGO romain.rnk49 at gmail.com
Wed Feb 18 17:02:15 UTC 2015


Do you have another version of the explanation on the processing chain that
the one in the Git documentation, on the page "Processus Flow"? Not that
this one didn't help me at all, but I'd like to know which files are used
to have a better idea where to search.


2015-02-18 15:43 GMT+01:00 Emil Tin <ZF0F at tmf.kk.dk>:

>
>
> What you call cyclability is often called impedance. Lua is the easy part.
> The hard part is making you you keep speed and impedance separate all the
> way through the processing chain, sine you still need speed to compute the
> travel time.
>
>
>
>
>
> Med venlig hilsen
>
> *Emil Tin*
> IT- og Processpecialist
> Trafik
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> *Fra:* Romain NKONGO [mailto:romain.rnk49 at gmail.com]
> *Sendt:* 18. februar 2015 15:35
> *Til:* Mailing list to discuss Project OSRM
> *Emne:* Re: [OSRM-talk] New way weight
>
>
>
> Hello Emil,
>
> As a matter of fact, the criterion which I'm trying to add is the
> cyclability, with an integer value from 1 to 5. With my project team, we
> already managed to include a Lua function in the bicycle profile which set
> this value according to tags like 'cycleway' and others. After that, we
> want to pass the value (as an attribute) all the way through the processing
> chain to the algorithm files.
>
> I'm not sure if I'm clear, if not tell me.
>
> Romain.
>
>
>
> 2015-02-18 15:17 GMT+01:00 Emil Tin <ZF0F at tmf.kk.dk>:
>
> Keeping speed and impedance separate is not an easy task.
>
> I worked on it a good while back in this branch, but it was never
> complete:
> https://github.com/Project-OSRM/osrm-backend/tree/feature/lua_impedance
>
> See also https://github.com/Project-OSRM/osrm-backend/issues/77.
>
>
>
> Kind regards
>
> *Emil Tin*
> IT and Process Specialist
> Traffic
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> zf0f at tmf.kk.dk
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>
>
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>
>
> *Fra:* Romain NKONGO [mailto:romain.rnk49 at gmail.com]
> *Sendt:* 18. februar 2015 15:13
> *Til:* Mailing list to discuss Project OSRM
> *Emne:* [OSRM-talk] New way weight
>
>
>
> Hello again everyone,
>
> Has anyone tried to add a new weight for the OSRM ways in addition of the
> speed? I try to add a cyclability criterion for the routing calculation and
> actually I look for every OSRM files where I could this attribute along
> with the speed so it will be taken into account in a bi-objective
> algorithm. Is there an easier way?
>
> Thanks.
>
>
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