[Talk-us] Per-State relations for the Appalachian Trail

[Elliott Plack]

Thanks for all of the feedback. I definitely won't be merging any relations
based on some of what you have all stated. What I will do is go through and
look at each relation state by state to ensure there is connectivity and
what not. I'll update anything of interest here.
On Tue, May 3, 2016 at 22:35 Kevin Kenny <kkenny2 at nycap.rr.com> wrote:

> On 05/03/2016 03:09 PM, OSM Volunteer stevea wrote:
> > In the USA, partly because we are such a geographically large part of
> > the North American continent and partly because each of our fifty
> > states is sovereign, I find that breaking apart very large relations
> > so they are across a single state at a time (then perhaps these are
> > collected into a super-relation) is often (though not always) a
> > sensible approach.  It is part size (large relations with vast numbers
> > of members are unwieldy), it is part “what sort of an entity is this
> > politically?"
> >
> > For example, there is a note in OSM’s Amtrak wiki page on the
> > route=train relation for the California Zephyr:  "The relation is said
> > to be so big it is hard to work with.”  That is something we might
> > take to heart and break apart the relation into statewide components.
> >  I haven’t done that, but somebody might, after considering that it
> > makes editing easier, and that state-at-a-time is a good way to do
> > this.  Even a simple web browser request to display this relation
> > results in "Sorry, the data for the relation with the id 905830, took
> > too long to retrieve." The practicality of potentially better avoiding
> > edit conflicts has been mentioned, and is also true.
> >
> Breaking apart the AT into separate relations - ideally with a
> superrelation joining them - would be sensible, I think, but be careful
> about the assumption about state lines. The AT literally spends a good
> many miles with the hiker having one foot in North Carolina and the
> other in Tennessee - the ridge that it follows is the state line.
>
> We also, I think, need to put some more thought simply into the support
> of large relations. I've recently found that even the New York Long Path
> (only a fifth the length of the AT) crashes JOSM (I haven't yet
> diagnosed the problem) and wound up editing in Meerkartor instead.
> Trails, highways, rivers, railroads, we have a good many places where
> things reasonably and predictably break down into thousands of parts
> over thousands of km, and I don't think we yet have a unified theory of
> how to handle them.
>
> --
> 73 de ke9tv/2, Kevin
>
>
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-- 
Elliott Plack
http://elliottplack.me
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