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

[bkil]

summer_midday_shade=* is as much sensible to be mapped in OSM as
lit=*, est_width=*, tidal=*, covered=*, internet_access=*, incline=*,
direction=* (for tourism=viewpoint) or charge=*. We just have to live
with the fact that certain mapped properties of common interest are
not made to be as "hard physical geospatial" as others. OSM is for the
people, by the people - we map what is useful for us. The said
recommendations in the thread included methods for estimating this
value without standing at a single point for 24 hours to observe the
shade.

On Fri, Jul 16, 2021 at 7:58 PM Brian M. Sperlongano
<zelonewolf at gmail.com> wrote:
>
> I fundamentally do not believe that shade is geospatial data, it is a characteristic that is derived from the physical location of objects in the world.  I do not believe that there is a way to make the proposal workable if it includes a mapper making shade observations.  The only approach that might be feasible is to map the physical qualities of the foliage and structures around a path, which could then be used algorithmically to come up with a shade calculation (as is done with the pubs in the shade concept).
>
> On Fri, Jul 16, 2021 at 1:46 PM bkil <bkil.hu+Aq at gmail.com> wrote:
>>
>> 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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