[Tagging] Mapping nonexistent paths

Sinus Pi sinus+osmtag at sinpi.net
Tue Mar 23 22:48:33 UTC 2021


Niels wrote:

> There is an obvious pedestrian route from the Blåbær Alle area to the
Solbær Alle area.

This is an obvious case for line-of-sight routing, implemented in some
routers, AFAIK. I believe the proposed virtual highways are supposed to
enhance that, or supplant where there is no "area" connecting ways known to
be traversable.

On Tue, 23 Mar 2021 at 23:40, Niels Elgaard Larsen <elgaard at agol.dk> wrote:

> Martin Koppenhoefer:
> >
> >
> > sent from a phone
> >
> >> On 23 Mar 2021, at 10:23, Niels Elgaard Larsen <elgaard at agol.dk> wrote:
> >>
> >> Can anyone give an example of such a sophisticated router available to
> OSM users?
> >
> >
> > the routers don’t have to be sophisticated if you connect highways to
> polygon highways, it’s sufficient for most cases to route around the
> borders (will be a little bit longer, but mostly not have practical
> consequences for the suggested route)
>
> Consider something like
> https://www.openstreetmap.org/way/910055265
>
> There is an obvious pedestrian route from the Blåbær Alle area to the
> Solbær Alle area.
>
> Even if a router *did* consider using the edge of the landuse=grass area,
> it would be
> much too big a distance (about 30 times longer) and it would lead the
> unlucky OSM
> user away from the grass towards Højvænge Alle highway resulting in a much
> longer walk.
>
>
> --
> Niels Elgaard Larsen
>
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