[GraphHopper] Looking for an engine for horse (and hiking) routing

[Peter K]

Hi Nop,

yes, the only big change you'll have to do is to add elevation data to
graphhopper to suit your needs. The other requirements like a new
FlagEncoder or creating directed edges with different edge weights
should then be straight forward. See OSMReader, OSMReaderHelper and e.g.
FootFlagEncoder.

I've created an issue for the elevation data:
https://github.com/graphhopper/graphhopper/issues/43


> PS: Does the default area "Unterfranken" mean that you are active in
that area?

close to that ;)
see my blog karussell.wordpress.com/about

Regards,
Peter.


> Hi!
>
> So far I have spent a lot of time creating (IMHO the only) maps for
> horseback riding, also useful for hikers. [1] There is a Garmin map,
> but it is not routable, as common routing engines are built for cars
> and tend to ignore differences in elevation and other important
> factors, thus creating disastrous suggestions for hikers or horses.
>
> I'm playing with the idea to extend my work and try to create really
> usable routing for horses (which would likely also work for hikers).
> In order to not re-invent the wheel first, I am looking for a suitable
> routing engine to base the project on (and a helpful community to
> explain a thing or two).
>
> For a suitable routing you'd need to
> - add elevation data
> - create directed edges with different weight uphill and downhill
> - interpolate additional points for elevation samples on long edges
> - calculate weight based on road conditions (tracktype), elevation
> (and some other factors)
>
> I noted the post "Routinggewichte". It's missing the start of the
> conversation, but it sounds very similar. If you're interested in
> elevation data, I am using both SRTM and CGIAR DEMs as data sources
> for the calculation of contour lines in my map compiler Map Composer
> [2] and I would like to base routing on CGIAR also.
>
> Did I understand that correctly?
>
> bye, Nop
>
> PS: Does the default area "Unterfranken" mean that you are active in
> that area?
>
> [1] www.wanderreitkarte.de
> [2] composer.waldpfa.de