On Sun, Oct 4, 2009 at 4:27 PM, Apollinaris Schoell <ascho...@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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