[Tagging] Tagging Digest, Vol 108, Issue 162

Dave Swarthout daveswarthout at gmail.com
Fri Sep 28 22:53:29 UTC 2018

It appears I was too hasty about dismissing the reach argument. Yes, that
makes sense Colin. And Joseph's suggestion to make it more general sounds
good too. I think the name part needs to be set up to distinguish the name
of the bend or reach from that of the river because both are valid for any
section. The hierarchy below would fill the bill and more than satisfy my
sense of orderliness. LOL

name=Tanana River
section:name=Harper Bend

I like what we've come up with so far. Any more suggestions?


On Sat, Sep 29, 2018 at 5:15 AM Joseph Eisenberg <joseph.eisenberg at gmail.com>

> Do canals have named sections?
> Waterway=section would work for canals too, if there are such a thing as
> canal reaches or sections or bends
> On Sat, Sep 29, 2018 at 5:32 AM Colin Smale <colin.smale at xs4all.nl> wrote:
>> On 2018-09-28 07:37, Dave Swarthout wrote:
>> The discussion about the definition of "reach" is interesting but IMO
>> it's slightly off topic.  Perhaps, because of those differences in its
>> interpretation, we would be best served by not using the term at all.
>> The point of raising the "reach" business it to help abstracting the
>> proposed tagging model to make it more generic. If we consolidate all the
>> thoughts expressed so far, we can say that:
>> * there can be contiguous linear sections of a river which can have names
>> * they can be "straight" (for example "reaches") or "curved" (for example
>> "bends")
>> * they can (partially) overlap each other, and there may be gaps (there
>> may not be a clear, sharp transition from one section to the next)
>> * they encompass the entire width of the river and are not just a 2D line
>> This is pointing towards:
>> * a way along the centre line of the river (colinear with the main_stream
>> lines?)
>> * waterway=river_section
>> * river_section={reach,bend,...}
>> * name=*
>> Is this a basis that we can work incrementally forwards from?
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Dave Swarthout
Homer, Alaska
Chiang Mai, Thailand
Travel Blog at http://dswarthout.blogspot.com
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