[GraphHopper] OSM Tags

[Markware Software Services]

Hi Peter, the objective I have is to provide the mappers with a tagging
scheme to use that will get them a good routing result.

The reason is that I did some test routing in the philippines and the
engine provided a solution that looked good on paper, but was not feasible
on the road. This I know as I have driven the different areas and the roads
are not passable for a car in a lot of cases or may even be seasonal, or
appear to be the fastest, but in fact, would be very slow due to hazards,
buses stopping frequently, lack of passing lanes, etc These roads should be
tagged in a way that forces the engine to choose a longer route on major
highways as the quickest way to get from A to B

If the tagging scheme could be put into the config file and read at
startup, that would be cool, then each instance could identify which tags
were relevant to the osm files being routed, and it could even be extended
to have different configs for different times of the year (eg: seasonal
roads that are fine in dry season but problematic in rainy season)

In the philippines, I suspect there will be quite a bit of mapping work
needed to get the map to a state where graphhopper will route reliably to
cover this type of scenario

Cheers

Mark




Regards

Mark Cupitt

"If we change the world, let it bear the mark of our intelligence"

See me on Open Street Map <https://www.openstreetmap.org/user/Mark_Cupitt>

See me on LinkedIn <http://ph.linkedin.com/in/markcupitt>



*See me on StackExchange <http://gis.stackexchange.com/users/17846/mark-c> *
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On Fri, May 16, 2014 at 4:43 PM, Peter K <peathal at yahoo.de> wrote:

>  The code can be updated by people too :)
> I'm not sure if this is necessary. What we should probably concentrate on
> is making this tag-parsing and -evaluating cleaner and probably accessible
> by scripting languages.
>
> Regards,
> Peter.
>
>  Thanks Peter, will see if I can turn this into a Wiki that can be
> updated by people. I want to propose a clear tagging scheme that works best
> with Graphhopper so mappers know how get the most out of the information
> they are entering into OSM
> Cheers
> Mark
>
>
>  Regards
>
>  Mark Cupitt
>
>  "If we change the world, let it bear the mark of our intelligence"
>
>  See me on Open Street Map<https://www.openstreetmap.org/user/Mark_Cupitt>
>
>  See me on LinkedIn <http://ph.linkedin.com/in/markcupitt>
>
>
>
> *See me on StackExchange <http://gis.stackexchange.com/users/17846/mark-c>
> *
>
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> The contents of this email are intended only for the individual(s) to whom
> it is addressed and may contain
> confidential or privileged information. If you are not the intended
> recipient, you must not disclose, copy, distribute,
> or use the contents of this email. If you have received this email in
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> delete the email and any attachments.
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>
>
> On Thu, May 15, 2014 at 4:30 PM, Peter K <peathal at yahoo.de> wrote:
>
>> This is currently only documented in the code (and unit tests). E.g.:
>>
>> https://github.com/graphhopper/graphhopper/blob/master/core/src/main/java/com/graphhopper/routing/util/CarFlagEncoder.java
>>
>> Regards,
>> Peter.
>>
>>
>> On 15.05.2014 06:31, Markware Software Services wrote:
>> > Hi Peter, I have been digging thorugh teh docs on GIT, but have not
>> > been able to find which tags in OSM Graphhopper uses to prepare its
>> > graphs
>> >
>> > Obviously 'oneway' would be used, maybe speed, highway = ?? (is it all
>> > of the tags or just some)
>> >
>> > Is this documented anywhere, I suspect I am missing the obvious
>> >
>> > Regards
>> >
>> > Mark Cupitt
>> >
>> > "If we change the world, let it bear the mark of our intelligence"
>>
>>
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