[josm-dev] self-intersecting ways

[Teemu Koskinen]

On Fri, 26 Mar 2010 13:57:34 +0200, Frederik Ramm <frederik at remote.org>  
wrote:

> 3. Draw roads as areas, either re-using the nodes of the adjoining
> landuse areas or using a multipolygon relation for landuse areas and
> road area (so they can share the border way which would remain
> untagged). Wrong because it defeats routing and puzzles newcomers.
>

If we had areas that had also a "direction", the roads could be drawn as  
areas but routing would also work.
It would however require new datatype, like the "lane" -type in:  
http://elanor.mine.nu/daeron/types.png
Maybe it could be also done with relations, but then it would be prone to  
errors if there's even a single editor that doesn't handle them well, so  
having an explicit type for it would be better.

In any case, there are solutions that wouldn't result in "wrong" models of  
the world.


Teemu Koskinen