[OSRM-talk] Making progress on dumping pgRouting tables to OSRM

Emil Tin emil at tin.dk
Wed Nov 13 17:27:09 UTC 2013


Hi Stephen,
Sound like very interesting work, conencting pgRouting and OSRM. I'm afraid I can't help you with your current problem, but I'm sure Dennis can.

Emil


On 13 Nov 2013, at 18:04 , Stephen Woodbridge <woodbri at swoodbridge.com> wrote:

> Hi Dennis, Emil,
> 
> I have made some progress reverse engineering the current file formats and have been able to successfully extract a pgRouting topology into the "current" OSRM normalized data files and run osrm-prepare on that.
> 
> That said, I have not tried to run routes on this which I will do at some point.
> 
> I am still not clear on how restrictions are defined. The only description that I can find is the out dated description in:
> 
> https://github.com/DennisOSRM/Project-OSRM/wiki/OSRM-normalized-file-format
> 
> Can someone please help me with the restrictions definition:
> 
> If I have the following graph:
> 
> nodes: a, b, c, d
> edges: ab, bc, db
> 
> a----b-----c
>     |
>     |
>     d
> 
> ab, bc, and db are all two way
> and there is no right turn from db to bc
> 
> Then, should the restriction as defined in the file be:
> 
> b, d, c, forbidden, 7F 00 00
> 
> where:
> 
> b is the via-node
> d is the from-node
> c is the to-node
> 
> and the records should then be sorted by edge_id of
> EDGE[via-node, to-node].
> 
> Is this correct?
> 
> I'm happy to create an updated reference page for the normalized file format once I get this all sortted out and working.
> 
> Thanks,
>  -Steve
> 
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