[Talk-GB] Tagging canal staircase locks

Mon Aug 16 21:59:24 UTC 2021

Another thought on this. The site relation requires a main tag. That's fine
for the piers with historic=heritage. It might also be alright for a lock
flight where combined with place=locality if that's an appropriate tag,
although you might argue it is an extant feature. The site page also points
out there are many cases where the main tag is site=* and that is
undocumented, although having browsed the first few pages on taginfo many
seem like they could just be replaced with a documented tag. So,
site=lock_flight would be an alternative possibility but perhaps not very
desirable either.

On Sun, 15 Aug 2021 at 12:23, Tom Crocker <tomcrockermail at gmail.com> wrote:

> Hi Tony
>
> I think you're right; that's a good relation to use for both those
> situations. I couldn't remember why it wasn't applicable in the cases I was
> interested in but (having now re-read) it's only for man-made nodes and
> open ways.
>
> Tom
>
> On Sun, 15 Aug 2021, 10:56 Tony Shield, <tonyosm9 at gmail.com> wrote:
>
>> Hi,
>>
>> I've been having similar thoughts for listed buildings of Historic
>> England et al particularly gate piers. I looked at type = site and
>> type=group and decided  to use type = site as site is in the wiki and has
>> 158K uses, group is not in the wiki and has 250 uses.
>>
>> But I might just be following all the other sheep ... . .. .
>>
>> Tony
>> On 14/08/2021 11:04, Michael Collinson wrote:
>>
>> I've experimentally enhanced my local Bingley Five Rise with both
>> Edward's and Tom's suggestions.
>>
>> https://www.openstreetmap.org/node/280721691
>>
>> My main motivation is how to highlight subjectively "interesting"
>> features for tourism and education purposes with quantitative tagging. It
>> is now possible to find the general location as a tourism=attraction and
>> pull up full information about it, including all the locks. This is where I
>> am going with a personal Android app.
>>
>> Being more serious about relations than my first thread comment, I loathe
>> the over-use and often unnecessarily complex use of relations where a
>> simpler solution will suffice. That said, it took a two cups of coffee
>> research and thought but I think the not well-liked 'group' relation does
>> seem ideal here IF you want more detail rather than just Where Is It?
>>
>> For Foxton Lock, I've followed Dave F's suggestion and simply added more
>> detail to the existing place=locality tag. So, you can find it and know
>> what it is using free-form text, but doesn't say anything quantitative
>> about the locks themselves - perhaps that just doesn't matter?
>>
>> https://www.openstreetmap.org/node/2413496279 Foxton Locks
>>
>> I noticed that one can't find the Fort Augustus Flight at all in OSM, so
>> I have tried a half-way approach and created a place=locality tag but put
>> it on a group relation:
>>
>> https://www.openstreetmap.org/relation/13089161 Fort Augustus Lock
>> Flight (that appears to be the formal name), alt name Fort Augustus Locks
>>
>>
>> NOTE: The edits are experimental, so if anyone wants to re-edit, FEEL
>> FREE, (as long as it is not a straight deletion!).
>>
>> Mike
>>
>>
>>
>> Other staircase locks mentioned in the thread or that I stumbled across:
>>
>> https://www.openstreetmap.org/#map=17/51.35194/-2.02505 Caen Hill -
>> Difficult to find in OSM, so definitely needs some TLC
>>
>> https://www.openstreetmap.org/way/239118607 Neptune's Staircase - Mapped
>> as a tourism=attraction on a single way bounding each lock pool.
>>
>> https://www.openstreetmap.org/node/330275022#map=15/53.1268/-2.6321
>> Bunbury Staircase Locks. Mapped as place=location, tourism=attraction on a
>> node
>>
>> https://www.droitwichcanals.co.uk/page24.html :
>>
>> "The largest narrow boat staircase is the Watford locks which has four
>> steps and is located on the Leicester line of the Grand Union Canal.
>> On the Droitwich Junction Canal we have a two staircase lock - locks 4 &
>> 5. The next nearest Staircase lock are the Stourport locks on the
>> Staffordshire and Worcestershire Canal"
>>
>> On 2021-08-12 22:40, Edward Bainton wrote:
>>
>> Fort Augustus Flight on the Caledonian Canal is also a staircase (pure
>> staircase afaik; no passing place).
>>
>> I looked at the wiki. How about:
>>
>> waterway=canal
>> lock=yes
>> lock:type=staircase_lock
>> [Other values: =tide_lock, etc? Pound lock assumed]
>> lock_number=1/5
>> lock_name:flight=Fort Augustus Flight
>>
>> On Wed, 11 Aug 2021, 19:49 Philip Barnes, <phil at trigpoint.me.uk> wrote:
>>
>>> I would have thought the obvious staircase locks to look at is Foxton.
>>>
>>> I remember going there with the school. From memory the gates are shared
>>> between locks with a wide passing place in the middle of the flight.
>>>
>>> Phil (trigpoint)
>>>
>>> On Wednesday, 11 August 2021, Tom Crocker wrote:
>>> > On Wed, 11 Aug 2021, 16:41 Michael Collinson, <mike at ayeltd.biz> wrote:
>>> >
>>> > > I would hazard a guess that you are the first to think of it and the
>>> if
>>> > > anyone else has it will Richard Fairhurst and possibly Gervase
>>> Markham,
>>> > > (not sure if he is still active?).
>>> > >
>>> > > Looking a Bingley Five Rise, in 2008 I (cyclist with very amateur
>>> interest
>>> > > in industrial heritage), mapped the the lock gates themselves. In
>>> 2011,
>>> > > dysteleologist <https://www.openstreetmap.org/user/dysteleologist>
>>> with
>>> > > an interest in man-made waterways thought to think of the locks
>>> themselves,
>>> > > creating canal way segments with lock=yes. At that is as far as it
>>> has gone.
>>> > >
>>> > > Looks like a job for a relation? [Slight shudder and exits stage
>>> left.]
>>> > >
>>> > > Mike
>>> > >
>>> > > https://www.openstreetmap.org/#map=19/53.85572/-1.83772  Bingley
>>> Five Rise
>>> > >
>>> >
>>> > Looks like another case where a general purpose group relation would be
>>> > useful such as
>>> > https://wiki.openstreetmap.org/wiki/Proposed_features/Group_Relation
>>> > Unfortunately I don't think there's any support for it in renderers
>>> > currently.
>>> >
>>> > Tom
>>> >
>>> > >
>>> > >
>>> >
>>>
>>> --
>>> Sent from my Sailfish device
>>> _______________________________________________
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>>> Talk-GB at openstreetmap.org
>>> https://lists.openstreetmap.org/listinfo/talk-gb
>>>
>>
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