[Tagging] New proposal: Obligatory tagging of oneway on motorway_link

[Joachim]

I drafted up a proposal about oneway=* for highway=motorway_link.
Please comment.
http://wiki.openstreetmap.org/wiki/Proposed_features/Motorway_link_obligatory_oneway

Proposal:
Define on the wiki page of highway=motorway_link that oneway=* must
also be tagged for every motorway_link. If not tagged, the oneway=*
status of this way is undefined.

- For rendering purposes ways with undefined oneway should be
displayed like the default, i.e. without oneway arrows.
- For routing purposes it is recommended to not route over ways with
undefined oneway since any assumption may be wrong and it would be
best to correct the data.
- In map editors undefined oneway should be displayed as tagging error.

Cheers, Joachim (Jojo4u)

___
Tagging mailing list
Tagging@openstreetmap.org
https://lists.openstreetmap.org/listinfo/tagging

Re: [Tagging] Handle with care (was: Accuracy of survey)

[Kotya Karapetyan]

Hi André,

I agree with moltonel.

But otherwise I think there is a difference between a general warning or
message from one mapper to another (which in its own is an interesting idea
but can lead to dialogues and discussions) and a specific technical feature
that would prevent moving an accurately positioned tag.

Imagine there is a real-world marker at 50.000° N:
http://www.dieweltenbummler.de/geografisches/geografische-besonderheiten/50-breitengrad/
Someone draws it in OSM at 50° N. Then I come there with a smartphone,
measure the location, find it at 49.9° and edit the OSM accordingly. It is
wrong by definition (providing that the real-world marker location is known
precisely), but there is no mechanism to prevent such editing.

I think it's a very specific and relevant gap, and would love seeing it
solved elegantly.

Kind regards,
Kotya


On Wed, Sep 9, 2015 at 11:39 PM, moltonel  wrote:

>
>
> On 9 September 2015 21:46:54 GMT+01:00, "André Pirard" <
> a.pirard.pa...@gmail.com> wrote:
> >There are various reasons for warning other mappers to be careful about
> >their updates.
> >I once temporarily overlaid two walking routes to show the effect of
> >displaying two sorts of icons.
> >Or I left in for a while drawing errors of a plugin as the best way to
> >show the author what I talk about.
> >Despite a don't touch note explaining why, a good soul passes, not
> >reading note and makes a "correction".
>
> Please run experiments like this on a test db, not on the main one. It's
> easy to point your editor to dev.openstreetmap.org for example (quoting
> from memory, not 100% sure). You never know when a data consumer will
> stumble upon your experiment, live or in a downloaded snapshot. Nobody
> expects osm data to be perfect all the time, but there's no point in
> knowingly making it worse.
> --
> Vincent Dp
>
> ___
> Tagging mailing list
> Tagging@openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging
>
___
Tagging mailing list
Tagging@openstreetmap.org
https://lists.openstreetmap.org/listinfo/tagging

Re: [Tagging] Modelling the relation between a waterstream and one of its resurgence

[John Eldredge]

Are you referring to a stream that, at some point, goes underground, then 
re-emerges to the surface at a downstream point? These are common on karst 
terrain.


--
John F. Eldredge -- j...@jfeldredge.com
"Darkness cannot drive out darkness; only light can do that. Hate cannot 
drive out hate; only love can do that." -- Martin Luther King, Jr.




On September 9, 2015 1:56:27 AM David Marchal  wrote:


Hello, there.
I wondered: when a waterstream is known to be, instead of a real, separated 
waterstream, merely a resurgence of another one, how should the link 
between them be modelled? Which tags should I use, and in which relation? 
Should I tag the resurgence by itself?

Hoping you can help,
Regards.


--
___
Tagging mailing list
Tagging@openstreetmap.org
https://lists.openstreetmap.org/listinfo/tagging
___
Tagging mailing list
Tagging@openstreetmap.org
https://lists.openstreetmap.org/listinfo/tagging

Re: [Tagging] Handle with care (was: Accuracy of survey)

[Volker Schmidt]

I am not expert enough to know if it's tecnically feasable:
Could we not put such markers in a separate db and make that available as
TMS/WMS service?

Volker 

>
>
___
Tagging mailing list
Tagging@openstreetmap.org
https://lists.openstreetmap.org/listinfo/tagging

Re: [Tagging] Handle with care

[Andy Townsend]

On 09/09/2015 22:39, moltonel wrote:
Please run experiments like this on a test db, not on the main one. 
It's easy to point your editor to dev.openstreetmap.org for example 
(quoting from memory, not 100% sure).


While that's a good idea (the test URL I use for such things is 
http://api06.dev.openstreetmap.org/ btw) it's perhaps worth mentioning 
that I'm not aware of anything rendering "standard" map tiles from the 
data in there.  I'm also not aware of anyone making planet files or 
extracts from there either*.


However, for a very small area (but still big enough to show the sort of 
effects you're looking for) I suspect you'd be OK doing an API MAP call 
to get the data and throwing that into a rendering database which you 
can access in the usual "rendering server" way, or by something like 
tilemill.


I had been thinking about writing some notes about how to do this for a 
while, just haven't got the necessary "round tuit" yet :)


Cheers,

Andy

* but I'd be delighted to be proved wrong on both counts of course.



___
Tagging mailing list
Tagging@openstreetmap.org
https://lists.openstreetmap.org/listinfo/tagging