> 12. Re: Interior ring with Potlatch? (Randy) > > > ------------------------------ > > Message: 12 > Date: Thu, 10 Dec 2009 18:09:44 +0000 (UTC) > From: "Randy" <[email protected]> > Subject: Re: [OSM-newbies] Interior ring with Potlatch? > To: [email protected] > Message-ID: <[email protected]> > Content-Type: text/plain; format=flowed > > Steve Bennett wrote: > > >On Thu, Dec 10, 2009 at 4:45 PM, Randy > ><[email protected]> wrote: > >>JOSM Validator has flagged one of those in my area. I think the tips of > >>the "C" may be overlapping a little, but I haven't gotten around to > fixing > >>it yet. A multipolygon is, I believe, the best practice in this case, > > > >Undoubtedly. > > > >>since your "pseudo wall" isn't really an exterior part of the building. > > > >Oh, I didn't know they had to be. What do you do when there's a > >complex of clearly distinct buildings that touch each other? I thought > >tagging them separately (but sharing ways) was the right thing to > >do... > > > >Steve > > Concede. "Exterior" was not a good word to use here, I was being lazy. How > about "building boundary demarcation"? (Whether you agree with the intent > of the statement or not.) Even though the building will be rendered as a > whole (with a hole), the underlying data will indicate a discontinuity. > > Regarding using a single way for multiple purposes, this is done quiet > often, and I think very appropriate. However, I think the mapper should > consider the potentially common boundary when doing this. Are either side > of the boundary mutually exclusive? That's definitely a case for a common > boundary. If the purposes of the potentially common way are unrelated, > e.g. a highway and an area boundary, then is the area boundary likely to > move if the highway moves? If yes, use a common boundary. If the two uses > are not exclusive, and the relocation of one will not necessarily require > the relocation of the other, then I think separate ways should be used. > That will certainly ease the effort of the mapper who may eventually have > to move one and not the other. > > -- > Randy > > Where two buildings share a wall, it's called a "party wall" or "demising wall" to distinguish it from an interior wall or exterior wall. Just in case you were curious.
Aspen (eulochon)
_______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
