On 23/01/19 11:52, Sergio Manzi wrote:
Only about the cited point (/tagging natural forests as
natural=wood/), I think a natural forest should be tagged as
natural=forest (/quite logically, I would say.../), while natural=wood
should be reserved for "small forests" (/which is one of the possible
meaning of "wood" in English, if I'm not mistaken/).
The area (size) is given by the area of the closed way. No need to
differentiate between 'small', 'medium' or 'large' (and each of them
would have to be defined). Avoid this!
OSM does not distinguish between the sizes of other thing other than by
using the area or a closed way, or dimensional tags.
I am firmly against having tags that distinguish between features based
on their size.
Also please consider that "forest" is very generic, and we could be
willing to more exactly define which kind of forest we are tagging
(/and eventually have it rendered accordingly/).
Trees and building are also 'generic' ...
To this extent the only way I see in the Wiki is to use the
leaf_type=* tag (/and only"broadleaved", "needleleaved" and "mixed"
are defined as possible values/).Wikipedia defines 6 types of forest:
But to me a forest is not just "a lot of trees", but an entire
ecosystem dominated by trees. And those ecosystems can be very
different between different continents and latitudes.
* Temperate needleleaf
* Temperate broadleaf and mixed
* Tropical moist
* Tropical dry
* Sparse trees and parkland
* Forest plantations
Temperate and Tropical moist/dry are climates... if those are to be
mapped them go right ahead .. but they are not confined to forests, so
should be mapped separately.
Whether something is 'natural' or not is up to your definition and
knowledge. For most mappers they simply see trees/plants.
If you that 'natural' is something that is verifiable then tell us how.
How do you tell if a tree has been planted by humans and one that is
self seeded? I cannot see a difference at all.
The density of plants (trees, shrubs, heath) is something to consider ..
but it needs to be a separate thing and be able to be used with various
vegetation types. I believe it has been raised before.
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