On 15/03/19 04:39, Paul Allen wrote:
On Thu, 14 Mar 2019 at 16:44, Martin Koppenhoefer
<dieterdre...@gmail.com <mailto:dieterdre...@gmail.com>> wrote:
> On 14. Mar 2019, at 16:49, Tony Shield <tony.shield...@gmail.com
<mailto:tony.shield...@gmail.com>> wrote:
>
> Can they currently be edited with JOSM?
of course, you simply add a relation as member to another relation.
Can you? It's not clear to me from the documentation that I can do
that in a way that achieves what
I want to do and is compatible with accepted usage. If you can tell
me how to do that I'll be very
happy.
Let me be clear. I want to decompose a route into segments and then
construct some sort of
relation (ordinary, superroute or whatever) that assembles them in
sequence.
Take a look at some that already exist.
Super relation 176684 in
https://hiking.waymarkedtrails.org/#route?id=176684&map=5!-27.1268!148.8261
You can see it is composed of 4 relations. Using the elevation profile
you can follow the route from south to north so they are in sequence
(there are a few out of order bits within the sub relations .. grr) and
it finishes up with the alternative routes (very incomplete) that are a
bit random along the length. So it is possible to organise them into a
sequence.
I want to do this
because I have a route which traverses some ways twice. I want to do
this because the same route
has ways which are traversed twice (A, B, C, D) but the first time the
stop at C is ignored (you can
neither board nor alight there) and the second time the stop at C is
usable (you can board or alight).
I want to do this because although the route is circular, it is
"hairy" (in the mathematical sense), it's
not an "O" but an "O=". The same way is traversed twice in opposite
directions: in a non-circular
route that would be two variants of a route master but this is a
circular route.
Being able to decompose the route solves several problems. As a
single route it is a real pain
to edit because the tools don't fully support the same way appearing
twice (maybe there's a JOSM
plugin that does it better). I still have a gap on the route
according to JOSM validator but I
can't spot it. It doesn't show as a red dot in the edit relation
table, I can't see it by scrolling through
the list of ways and looking at them, when I go to the validator and
try zooming to the problem
nothing happens. It's in one of the ways that gets traversed twice
and it's driving me crazy. I think
that subroutes would make it a lot easier for me to zero in on the
problem.
Route with the same way twice? These 2 have the same ways twice - in
different directions
relation 3550083
relation 7258397
Both edited in JOSM - so it is possible to add the same way twice .. it
does give a warning pop up that you click through.
That pop up has an option to permanently deny entering things twice...
oh and are you in expert mode?
As a single route it's impossible to figure out by simple inspection
of the query tool:
https://www.openstreetmap.org/relation/8592409#map=14/52.0860/-4.6644
You tell me where it goes in what sequence without delving deeply into
the relation. I'll give
you a hint: it starts and ends here:
https://www.openstreetmap.org/node/3642998002
Want another hint? It doesn't just start and end there, it also stops
there in the middle of its
route. Without looking at the details of the relation, tell me where
it goes next after that
starting point. Being able to decompose it into segments would allow
people to see a
sequence of segments in order (such as via umap) and it would be
obvious what the route
is. Having segments would allow me to deal with the stop that is
passed twice (in the same
direction) but is only used once - it would appear on one segment but
not the other.
I don't see the query tool as being appropriate for routes. What you
would probably like is something like the waymarked trails but for
public transport... ???
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