On 26/03/17 19:10, Marc Gemis wrote:
here is another example I met today
location : http://osm.org/go/0ErT_~pXR-?m=
picture: https://xian.smugmug.com/OSM/OSM-2017/2017-03-26-Dessel/i-VvGqfPV/A
It's clear that the left part on the picture (north on the map) is
cultivated land, the grass is greener. I assume it is
landuse=farmland. I doubt it's meadow, as there is no fence, so you
can't keep cows on it. I think it's grass now, but they will place
some crop on it later on in the season.
The part on the right is clearly different. More like
natural=grassland. There were even some boundary stone separating both
areas. How should I map the southern part ? I don't think it's a
meadow nor a land to grow crop.
It has already been pointed out: landuse is not a constant. What is
cropped for hay one year can be growing beetroot or potatoes the year
after and later still become pasture. Unless one is prepared to look
over each single bit of farmland at least once per year (for which I do
not think we are in sufficient numbers today) my vote is for only
tagging landuse=agricultural or landuse=farmland. Better to give less
but reliable detail. "landuse=meadow" could be used in some specific
cases, like aerodromes. And even then: the bit of land at
#map=18/51.21083/5.47755, South of the runway, is left barren some
years, in other years the owner (who also owns the little airfield) will
grow maize on it. The bits east and west of the runway could be mapped
as "meadow" though, they are presently tagged "farmland".
KA
PS Pour la petite histoire: I once came close to flying INTO the maize -
that runway is awfully short, and the bit of wood further to the South
is very good for creating turbulence...
m.
On Fri, Mar 24, 2017 at 7:29 PM, Marc Gemis <[email protected]> wrote:
On Fri, Mar 24, 2017 at 5:04 PM, joost schouppe
<[email protected]> wrote:
Please help me with the cleanup of the area around Reet. I honestly
cannot remap all landuse=farm there based on imagery, although I know
the area more or less. :-)
I'll have a look :)
What would you prefer for "unsure from imagery"? Just nothing, or a polygon
tagged fixme? Or something else?
Teach me how I can determine the right tags from imagery. During my
lunch break today I was working on the area south of the Pierstraat
and north of Voetweg 32 http://osm.org/go/0EpHov3c-- and further to
the east/north east.
I wonder which tags others would use for the areas covered with grass.
Are there people that are immediately convinced that those areas are
meadows ? Or are you in doubt, perhaps just grass, or even
recreational areas (west of the soccer field) ?
I am mostly interested how other people decide the right
landuse/landcover/natural tag.
Even with pictures from surveys I wonder which tags I should use. What
for areas that are clearly meant for keeping horses, or wet meadows.
There are so many tags to chose from.
A recent problem I had was to tag
https://xian.smugmug.com/OSM/OSM-2016/2016-11-20-Vremde/i-L3kGV6K Is
this really a meadow ? Can have a meadow so many trees ? Or is it an
orchard (I don't know a lot about trees), with a lot of grass ?
I would be nice to have an easy way to ask for the proper landuse tags
by posting pictures.
m.
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