On 13/06/18 17:23, Marc Gemis wrote:
On Wed, Jun 13, 2018 at 9:15 AM Warin <61sundow...@gmail.com> wrote:
won't work, see e.g.
https://www.openstreetmap.org/search?query=waasmunster#map=16/51.1215/4.0932&layers=N
that's not a forest, that are a lot of private gardens with trees in it.
Exclude area with landuse=residential ??
but what if you want to map the presence of trees. I would do that
with landcover=trees.
Me too...however I was responding to the request of excluding things not
matching a specific requirement of lager areas of 'forests'. Whatever that
means.
But those using landuse=forest will have to overlap it on
landuse=residential. As I see it, landuse=forest on top another
landuse still means the "other" landuse but with some trees on it.
landuse=forest not overlapping any other landuse means "forest", and
e.g. a small landuse=retail overlapping on landuse=residential means
retail (at least that is how carto-css present things now).
No, you cant. As there are conflicting tagging methods
If everything was "properly" mapped with those 3 tags I could come up
with an algorithm. Not with the current mess of course.
Proper? Who says what is proper?
Proper for me means clearly separate landuse from landcover, so that
one can see the use of the land and how it is covered from different
tags.
Not proper is e.g. one mapper using landuse=forest to indicate an area
for timber production and another mapper to map trees in a private
residential garden.
The latter mapping is fine if you just want to colour a map. :-)
Yes.
One suggestion is that the present use of landcover to specify a land cover
continues and that the land use of trees be yet another tag.
Another suggestion is the provision of two tags - one taking one of mapping
trees the other of mapping timber production.
I prefer option 2 as then both sides have equal amounts of trouble ... :)
-------------
If 'proper' would mean that the tags were defined in such a way as to exclude
another use then that would be good.
Start at one end and work towards the other? Would the start be at 'landuse' or
at the values 'grass' and 'forest'? :)
Good luck ... too many people stuck with what we have now, and while that
remains the mess will continue.
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