[Tagging] Planning route in the shade during hikes either in urban areas or forests

[Joseph Guillaume]

On Sat, Jul 17, 2021 at 12:04 PM Mateusz Konieczny via Tagging <
tagging at openstreetmap.org> wrote:

> Change tag name for something that is indicating that it is for shade at
> specific time of day and year.
>
> This would move it "worthless and misteading data, should be removed"
> (if place has no shade at 14:30 / 2:30 PM then shade=yes is absurd) to
> "causes pointless cutting of ways and we risk manual tagging also for
> other specific parts of day/year"
>
>
Not sure what you mean by this - does it mean you now disagree with your
previous suggestion that summer_midday_shade=yes/no/limited may be viable?
Personally I think the idea of specifying shade directions is more
promising and more widely useful anyway.


>
> Jul 16, 2021, 19:42 by bkil.hu+Aq at gmail.com:
>
> Could you perhaps share your reasoning or what needs to be improved
> for you to accept it or could you propose a better alternative?
> Estimating the direction of sunlight around noon in the summer based
> on GPS coordinates doesn't sound like rocket science to me. Do you
> have any other concern that was not already answered in the above
> thread?
>
> On Fri, Jul 16, 2021 at 7:26 PM Brian M. Sperlongano
> <zelonewolf at gmail.com> wrote:
>
>
> I am opposed to the mapping of shade.
>
> While I think this is an interesting problem, I think it is simply too
> nebulous of a concept that doesn't belong in OSM.
>
> I believe the Australians would also object to the characterization of
> shade being on the north side of a building as well :)
>
> I intend to vote against it if put up for a vote.
>
> On Sun, Jul 4, 2021 at 2:05 AM bkil <bkil.hu+Aq at gmail.com> wrote:
>
>
> How would you specify the kind of shade, like whether it comes from a
> man_made feature or foliage (tree or hedge)? Should it be combined
> with seasonal=* for deciduous plants?
>
> What is the criterion with regard to time of day, like if due to the
> angle of the sun, it only provides shade between 11:00-13:00 (the most
> important time), before noon or in the afternoon? It can also come
> handy to know whether the pavement will still be burning to your dog
> if shade only reaches the highway during the afternoon.
>
> https://wiki.openstreetmap.org/wiki/Talk:Key:shade#type_of_shade
> https://wiki.openstreetmap.org/wiki/Proposed_features/Shade
>
> As an alternative, it would be possible to map each and every tree and
> hedge, along with its taxon, height and crown_diameter, each fence
> with fence_type and each building and other structure in 3D, each
> sidewalk with exact material and geometry and compute shading based on
> that, but this sounds like much more work and it is implausible in
> most parts of the world in the foreseeable future (and not required
> for solving the problem at hand to a given approximation anyway).
>
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