[Tagging] How to tag named group of named water areas?

Tod Fitch tod at fitchdesign.com
Fri Nov 2 23:36:19 UTC 2018


I prefer to have common tags on the relation. That said, in JOSM you can select the relation members and then easily add, update or delete a tag from all members of the relation.

Cheers!

> On Nov 2, 2018, at 4:00 PM, Dave Swarthout <daveswarthout at gmail.com> wrote:
> 
> Of course. The Trans Alaska Pipeline is as good an example as any. It is a man_made oil pipeline that stretches 1300 km across the entire state of Alaska. The relation contains 280 members. The reason there are so many members is because the pipeline way has been split into many individual pieces, separate ways, that have certain differing characteristics, e.g. where it runs underground or crosses a river on a bridge. The tagging for any specific way deals with those differing characteristics. A section might run for several miles underground and then emerge. At that point the pipeline way must be split into a section with location=underground and the emergent section with location=overground. Now it comes to a river that it crosses on a bridge. The pipeline way is split again into a section that has the tags bridge=yes and layer=1. You do the same thing to a highway where the number of lanes changes, or maxspeed. Each change requires you to split the way.
> 
> Now say you've been tagging each piece with all the tags required rather than the relation. You decide to add a Wikipedia tag to the pipeline. Using your method, you must edit every piece of the pipeline, all 280 sections of it, and add the Wikipedia tag. Tagging the relation with the Wikipedia entry, however, requires only one edit. To make matters worse, let's just say you misspelled the Wikipedia tag value. You meant to write "wikipedia=en:Trans-Alaska Pipeline System" but forgot to include the "en:" prefix. Back you go to your editor, editing all 280 pieces again. That's why I say tagging it this way is a maintenance nightmare.
> 
> I would only use tags on a particular way when its characteristics demand it. Tags that apply to the entire pipeline belong in the relation. Tags like the Wikipedia tag, substance=oil, man_made=pipeline, operator, alt_name, etc., belong on the relation. However, tags like bridge and location, tags that apply to individual sections or ways, get applied to the ways and not the relation because they don't apply to the entire pipeline.
> 
> On Sat, Nov 3, 2018 at 4:25 AM Mateusz Konieczny <matkoniecz at tutanota.com <mailto:matkoniecz at tutanota.com>> wrote:
> 2. Nov 2018 01:04 by daveswarthout at gmail.com <mailto:daveswarthout at gmail.com>:
> 
>  The only tags that should appear on the ways themselves are attributes of those ways, for example, location=overground or location=underground, and tags for bridge and layer. Everything else, Wikidata, substance=oil, man_made=pipeline, etc, should appear only on the relation.
> 
> 
> I am not convinced that it is a good idea.
> 
> 
> If those tags appear on each way in addition to the relation, maintaining any consistency in the tagging on this beast would be almost impossible.
> 
> 
> Can you give examples of task that you claim to be almost impossible?
> 
> _______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org <mailto:Tagging at openstreetmap.org>
> https://lists.openstreetmap.org/listinfo/tagging <https://lists.openstreetmap.org/listinfo/tagging>
> 
> 
> --
> Dave Swarthout
> Homer, Alaska
> Chiang Mai, Thailand
> Travel Blog at http://dswarthout.blogspot.com <http://dswarthout.blogspot.com/>_______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/tagging/attachments/20181102/65ce6eaa/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: Message signed with OpenPGP using GPGMail
URL: <http://lists.openstreetmap.org/pipermail/tagging/attachments/20181102/65ce6eaa/attachment-0001.sig>


More information about the Tagging mailing list