[OSRM-talk] New way weight

Emil Tin ZF0F at tmf.kk.dk
Wed Feb 18 14:43:19 UTC 2015


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
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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<mailto: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
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Fra: Romain NKONGO [mailto:romain.rnk49 at gmail.com<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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