[GraphHopper] Elevation data & two weights per edge

[Peter K]

Hey Gabriel,

exactly. you can specify this in the config (See the
config-example.properties):

osmreader.acceptWay=bike2
graph.elevation.provider=srtm

(or via Java API)

and then GH will download necessary srtm data automatically for the area
you need.

Regards,
Peter.

> Hi,
>
> this is awesome!
>
> I already tried an old branch with this feature, it was working pretty
> well.
>
> So now it would be possible to compute a bike speed for each direction
> using elevation data?
>
> Great work!
>
> Regards,
> Gabriel
>
>
>
> 2014-03-18 17:30 GMT+01:00 Peter K <peathal at yahoo.de
> <mailto:peathal at yahoo.de>>:
>
>     Hi there,
>
>     please check out and try a new feature:
>     https://github.com/graphhopper/graphhopper/pull/169
>
>     Many thanks goes to @NopMap!
>
>     I would like to know your ideas/questions/experience before
>     merging this
>     into master!
>
>     In order to implement this it was necessary to introduce a 'reverse'
>     flag in the Weighting.calcWeight method. With other changes (like
>     several to CH) it is possible to store two weights per edge in
>     GraphHopper. This could be useful for a traffic jam scenario as well:
>     one direction is slow while the other is faster etc. Storing this
>     information in one edge makes it easier to handle and it is more
>     compact.
>
>     Regards,
>     Peter.
>
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