[OSRM-talk] Modifying the graph with ad-hoc time penalties at intersections

Patrick Niklaus patrick.niklaus at student.kit.edu
Wed Oct 21 19:44:56 UTC 2015


Hey Guillaume,

I think Daniel wanted to post a link to this line:

https://github.com/Project-OSRM/osrm-backend/blob/develop/extractor/edge_based_graph_factory.cpp#L417

All you need to do is to adapt the code to not only add penalties for
traffic signals but also your node.
Actually this code should be made more general as outlined in
https://github.com/Project-OSRM/osrm-backend/issues/1490

Best,
Patrick


On Wed, Oct 21, 2015 at 9:02 PM, Guillaume Barreau <g.barreau at gmail.com> wrote:
> Hi Daniel,
>
> Thanks a lot for this very fast reply. The url you sent appears to be
> broken. Could you please double-check it for me?
>
> Thanks again,
>
> Guillaume
>
> On 21 October 2015 at 14:56, Daniel Patterson <daniel at mapbox.com> wrote:
>>
>> Hi Guillaume,
>>
>>   There is a function called for every node:
>>
>>
>> https://github.com/mapbox/inrix-processing/blob/master/regions.json#L198-L201
>>
>>   however, it doesn't feed back any specific per-node penalties.  It's
>> used to flag barriers and traffic lights right now.
>>
>>   It could be adapted to do per-node penalty values, you would probably
>> need to modify the existing light penalty functionality and add a lookup for
>> your values, rather than using the global light penalty we have currently.
>>
>> daniel
>>
>> On Oct 21, 2015, at 11:46 AM, Guillaume Barreau <g.barreau at gmail.com>
>> wrote:
>>
>> Hello,
>>
>> I would like to OSRM for a research project but I have this unusual
>> requirement. I would want to be able to add time penalties at some sets of
>> vertices (defined by their id) that would be used to compute the fastest
>> routes in a table calculation. My input would therefore be a list of
>> (node_id,delays) to be added to the underlying graph. Is this feasible? I am
>> prepared to modify the code if needs be, I don't expect to be able to do
>> this with a config file. If it is feasible, could someone point me in the
>> right direction?
>>
>> Thank you very much for your help,
>>
>> Guillaume
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