[OSRM-talk] Elevation in OSRM result (for profile)

[Elisabeth Leu]

Hi List,

This e-mail just to let you know that we decided to work on integrating the
elevation output in OSRM.

The goal is to have elevation in the geometry of the output JSON as well as
in the GPX, and an option in OSRM to enable elevation (disabled by default).

We might ask questions about it in the next days / weeks, with the final
goal to suggest this feature as a pull request for reviewing.

We are open to take opinions and remarks about it, esp. concering a future
pull request for OSRM master/develop.

Best regards,
Radu, Yves, Stéphane and Elisabeth



On Fri, Jan 31, 2014 at 8:49 AM, Yves Bolognini <
yves.bolognini at camptocamp.com<javascript:_e(%7B%7D,'cvml','yves.bolognini at camptocamp.com');>
> wrote:

> Hi,
>
> Thanks for your answer. Actually yes, for now our need is simply to
> show elevation in the output.
>
> I thought of using the way.name attribute to pass node elevations. But:
> 1) Elevation is on nodes, not on ways. So we would need to implement
> some hack to pass both nodes' evelations on every way's name
> 2) I thought maybe the profile thing in OSRM output would be
> interesting for other devs, so it may be good to code it the clean way
>
> Anyone has an idea how hard it would be to add such a feature inside
> OSRM? Is someone interested in this addition?
>
> Best,
> Yves
>
>
> 2014-01-30 Florian Lohoff <f at zz.de<javascript:_e(%7B%7D,'cvml','f at zz.de');>
> >:
> >
> > Hi,
> >
> > On Thu, Jan 30, 2014 at 02:28:39PM +0100, Yves Bolognini wrote:
> >> Hello List,
> >>
> >> We have elevation data in our source graph. Each vertex has elevation
> >> information ("ele" key in OSM-like data). We'd like to have this info
> >> in OSRM result in order to display profile.
> >
> > My understanding would be that you need to put this into some tag OSRM
> > stores the hsrm file and shows it in the JSON e.g. name.
> >
> > I do something like the following:
> >
> >   if speed_profile[highway] ~= nil then
> >         way.speed=speed_profile[highway]
> >         way.name=table.concat({way.id,highway,way.name,way.ref},"|")
> >   end
> >
> > So i get way.id, highway type, name and ref ...
> >
> >> What are the chances that elevation data will be available one day in
> >> the output?
> >> What do you estimate regarding the complexity to implement it?
> >> Would a contribution for this feature be considered?
> >
> > From using elevation data i would expect to have elevation on nodes
> > and if adjacent nodes have different elevation, you would need to split
> > the way and make it 2 oneways with different costs.
> >
> > Uphill more expensive than downhill.
> >
> > Or is it just you'd like to show elevation data in the output?
> >
> > Flo
> > --
> > Florian Lohoff                                                 f at zz.de<javascript:_e(%7B%7D,'cvml','f at zz.de');>
> >
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-- 
Elisabeth Leu

Camptocamp SA
PSE A
CH-1015 Lausanne
www.camptocamp.com

Phone: +41 21 619 10 21


-- 
Elisabeth Leu

Camptocamp SA
PSE A
CH-1015 Lausanne
www.camptocamp.com

Phone: +41 21 619 10 21
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