Thanks all for the feedback. I was away all day yesterday so excuse this late reply.
I tagged the route as a relation a long time ago (route=canoe) but was updating some areas lately and came across those untagged ways again and their invisibility began nagging at me. While I don't expect anybody to actually use a routing service to put together a wilderness trip at their desk, I want my work to be helpful for canoeists when following "the trail" as it weaves through myriad lakes, around islands, from put-in to take-out, for each leg of the route. If OSM-based maps don't show the lake crossings, how will users follow the parts of the route with the untagged ways? I'm unsure if such a route will be followable. Does anyone know how to test it for routablity? On Thu, Jun 28, 2018 at 3:22 PM Kevin Kenny <kevin.b.kenny+...@gmail.com> wrote: > > On Thu, Jun 28, 2018 at 12:42 PM Dave Swarthout <daveswarth...@gmail.com> > wrote: > > I've asked this question before on OpenStreetMap Help and mapped the > route as suggested. ( > https://help.openstreetmap.org/questions/31449/how-do-i-map-a-canoe-route). > I've mapped the portages where one carries the canoe as highway=footpath > but the water portions of the route do not show up in OSM or OSMAnd. The > canoe route is the Swan Lake Canoe Trail. There is a portion of it here ( > https://www.openstreetmap.org/#map=14/60.7101/-150.6839) where one can > see the footway portions, the portages, but the untagged ways crossing the > lakes are invisible. The ways are included in my route relation but I'm at > a loss as to how to tag them so they exist as a part of the route. > > > > AFAIK, existing canoe routes use waterway tags to indicate the water > portions of the routes, e.g., waterway=stream, but the routes I'm working > on pass through lakes. There is no stream involved, nor is there a footway > across the lakes. > > > > I know I'm raising the specter of tagging for the renderer but if the > water portions of this route aren't visible or findable, how would a > routing engine or a GPS make use of them? How should I tag those ways that > cross the lakes? > > I don't know of any specialty map - yet - that does rendering of canoe > routes. But I'd tag the thing as a route relation, with both waterway=* and > footway=* segments. route=canoe would make sense, and for many specialty > maps, it would want to have name, network, and ref. (For ref, for many > shorter hiking routes, I just use the initials of the trail, and 'lwn' > [local walking network] for network. > > If there's a plan to tag a bunch of these, I bet it would be possible to > interest Lonvia https://hiking.waymarkedtrails.org/help/contact in adding > a 'canoe' mode to Waymarked Trails, which might very well be the easiest > path to getting rendered, integrated mapping for it. She already has > 'hiking', 'cycling', 'riding', 'skating' and 'ski' modes, so I can't > imagine that 'canoe' would be much harder. > > If you're unclear on how to construct a route relation, Northville-Placid > Trail, which I know you're familiar with since we've corresponded about it, > is built as one and is fairly simple. It couldn't be a single way, both > because it's too big and because it shares the way with roads or other > trails at various points. > https://hiking.waymarkedtrails.org/#route?id=4286650 is the WMT display > of it (click on the gear at the bottom center of the screen and change the > base map to Open Topo Map!) and > https://www.openstreetmap.org/relation/4286650 is the corresponding > display in OSM proper. > > If you can't find anyone else interested in rendering it, I could maybe > have a go. I'd use something like > https://kbk.is-a-geek.net/catskills/test4.html?la=43.2910&lo=-74.3641&z=12 > (since that rendering already works) as a basemap, and then overlay your > routes as heavy lines in some sort of bright colour. But I'd really prefer > to have it hosted somewhere other than my home office! > > I don't think anyone's invented a canoe routing engine, and in general, > the mind boggles at using a routing engine for a backcountry trip: the trip > planning is part of the fun! Did you have, instead, a navigation system in > mind? A lot of systems are capable of reducing a route, or a concatenation > of route segments, down to a single multiline and telling a GPS,' Follow > this!" That's different from 'try to find me the most efficient (by some > metric) route from point A to point B." > -- Dave Swarthout Homer, Alaska Chiang Mai, Thailand Travel Blog at http://dswarthout.blogspot.com
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