[josm-dev] Relation editor support for north/south and east/west similar to forward/backward

[Florian Lohoff]

On Tue, Nov 26, 2013 at 03:46:47PM -0700, Martijn van Exel wrote:
> So the relation between the east--west and north--south member roles
> is equivalent to the relation between forward--backward.
> 
> Because the cardinal direction is commonly included on the road signs
> (see example http://www.aaroads.com/west/new_mexico010/bl-010_eb_at_i-010.jpg)
> this information is useful in the U.S. (and Canadian) context as a
> drop in replacement for the traditional forward / backward role
> members.

I still dont get it - Which relation would need this as a role?

If this is a signposted destination i would expect it in the
destination or destination:lane tag on the road as west e.g.

destination:lanes=West;Los Angeles|East;Boston

For example Mapfactor Navigator will use this to show destinations.

backward/forward as role are in relation to the ways direction. A tag
can either have a meaning in forward or backward or both directions
on a way. There is no way a tag has a meaning in 56° left of the way.

Flo
-- 
Florian Lohoff                                                 f at zz.de
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