[OSM-talk] Landuse areas etc. abutting highways

Anthony osm at inbox.org
Sun Oct 4 21:34:35 BST 2009


On Sun, Oct 4, 2009 at 4:27 PM, Apollinaris Schoell <aschoell at gmail.com>wrote:

> > (a) the simple approach with
> > coterminous lines giving a notional zero width to the highway, vs.
> > (b) the more precise approach of mapping the areas either side of
> > the highway as areas that are separate both from each other and from
> > the highway.
> >
> > In practice, almost all mapping seems to use approach (a) - but
> > would approach (b) be easier for subsequent editing and addition of
> > detail, and rather clearer as it avoids superimposed ways and
> > potential editing errors?
>
> a) is common but bad practice, very difficult to edit and not really
> correct when it comes to micro mapping. the road is not part of the
> farm or golf course
> If you don't want to do micro mapping the best approach is to create a
> multipolygon relations for the farm and one for the golf course. use
> the portion of the highway in the polygon as outer way and delete the
> duplicate ways.
> b) is nice if you really have precise data, this matches what's on the
> ground and can be extended easily with more details
>

Yeah, a) is just plain bad in my opinion.  I'd like to see the two areas
mapped as border relations, with the center area also mapped as a border
relation (and landuse=right_of_way).  But apparently landuse=right_of_way
hasn't been proposed yet.
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