Re: [Tagging] "Temporary" road with once-per-half-hour access.

[Tijmen Stam]

I have now seen and added the road.
The road has an official manual: 
http://www.hautes-alpes.fr/evenement/1033/1639-actualite.htm (download 
the PDF)


See http://www.openstreetmap.org/changeset/50791084

I have not tried to map the situation on this little poece of road 
, where from the whole and 
half hour to 7 past traffic should drive on the right, and from :15-:22 
and :45-:52 traffic should drive on the left :-)


The proper tagging for the turning circle (oneway:conditional = yes @ 
(times for direction Abriès); -1 @ (times for direction Aiguilles) was 
more than 255 characters long :-)


Tijmen






On 20-07-17 21:52, Martin Koppenhoefer wrote:



2017-07-18 23:18 GMT+02:00 Tijmen Stam >:


On 18-07-17 22:26, Martin Koppenhoefer wrote:


At the start towards Abriès, an "access:forward = no" +
"access:forward:conditional = yes @ (22:00-22:07,
22:30-22:37, ... )" tag over a short section, and mutatis
mutandis at the other end?



I would do it similarly, but put less emphasis on the traffic
lights, something like
vehicle=no
vehicle:conditional = yes @ (22:00-06:00)


How do you mean "less emphasis on the traffic lights"?



Sorry, I had thought it was every 7 minutes, but as it is every half an 
hour, being more explicit might indeed make sense.




(or are the restrictions for pedestrians as well?)


I don't know, but the emergency route isn't the most logical route
for pedestrians nor cyclists.



it doesn't matter, if pedestrians can go there anytime, you shouldn't 
exclude them.


Cheers,
Martin


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Re: [Tagging] Produce tags for orchards

[John Willis]

Javbw

> On Jul 29, 2017, at 11:22 PM, Tobias Zwick  wrote:
> 
> I find to tag the crop / produce of farmland is rather ineffective, as
> the actual crop being cultivated can and will change over the years or
> even multiple times a year. (See "crop rotation")

Most of the fields I tag with crop= haven’t changed much in a couple hundred 
years. The “orchards” of mulberry trees have disappeared as silk production 
dwindled, but the rice paddies that remain have been around for a very long 
time and grow exclusively rice for as long as the town has existed - the 
temples built in the 1500s and 1600s mean the town existed then, and they were 
completely dependent on rice. 

AFAIK, Rice paddies in Asia are usually not rotated nor used for anything 
besides growing rice. 

Even the corn fields here near my house in Japan produce feed corn and nothing 
else. They may be fallow for a year, but when they grow anything, it is corn. 

The greenhouses near my house grow nothing but strawberries. Only strawberries. 
Always. 

The greenhouses up the street grow eggplants every year. For the ten years I 
have lived here, that land grows eggplants and nothing else.  

The farms I visit in Nagano grow Wasabi. They are purpose built to grow wasabi. 
It is extremely difficult to grow. Nothing else could ever grow in the prepared 
gravel beds for them. 

~

There will always be examples of why a tag is bad - but that means you don’t 
use it. 


***but that doesn’t mean it is not useful to someone in another region or 
situation you are unfamiliar with*** 

It may be that we need to modify the tag to suit the needs of everyone, but 
killing a useful tag or removing a use case because your region or experience 
says it is not useful is not a great idea - unless you propose a new tag that 
the old tag would conflict with. 

Javbw 
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Re: [Tagging] Produce tags for orchards

[Christoph Hormann]

On Sunday 30 July 2017, Tobias Zwick wrote:
> >
> > That is not really the current use of these tags.  Tea plantations
> > are for example quite universally tagged landuse=farmland and not
> > landuse=orchard.  Same for strawberries i think.
>
> Hmm, how did you get this information? In taginfo, trees=tea_plants
> and crop=tea there seem to be too few usages to show the
> combinations:
> [...]

These assessments were based on manual inspection and memory of such 
areas and how they are mapped in OSM.

As said before trees=* is mostly used for landuse=orchard, crop=* mostly 
for farmland.  This applies here too.

With such relatively low use numbers you can easily get the data via 
overpass and analyze this directly.

By the way most use of landuse=orchard + trees=tea_plants is by user 
LLAQWA and much of it is from the last week...

Yet another example showing why documenting tags on the wiki is 
important - If you look at http://taghistory.raifer.tech/ for crop=tea  
and trees=tea_plants you can see that trees=tea_plants was much more 
widespread than crop=tea until 2015 and then crop=tea took over, 
especially in 2016.  Neither of these tags is properly documented and 
while landuse=farmland + crop=tea is clearly the dominating tag for tea 
plantations at the moment mappers do not realize this tagging is 
widespread and use alternative taggings, just like they probably did in 
2015/2016 with crop=tea - mostly not because they distinctly want to 
use a certain tag (which would be fine) but because they don't know 
about the pre-existing more established tag.

-- 
Christoph Hormann
http://www.imagico.de/

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