On Dec 25, 2007 3:24 PM, Marcus Wolschon <[EMAIL PROTECTED]> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Karl Newman schrieb: > > Dave, > > > > I'm in active debate about this on the Wiki. The proposal page is a > > mess, and I'm tempted to wipe it out and start over. Anyway, look at > > my suggestion here: > > http://wiki.openstreetmap.org/index.php/Proposed_features/House_numbers#Third_Suggestion_.28Using_relations.29 > > > > My perspective on this is getting numbering to work on existing GPS > > navigation devices (specifically Garmin). What I've proposed is > > compatible with the requirements for that. I don't like the idea of > > ranges because it could (will) lead to overlapping ranges, data > > duplication at the endpoints, etc. Ranges just make it more > > complicated than it needs to be. > > Dear Karl, > > I really like your proposal to tag only key-numbers at nodes and > infer the rest (especially when ways are changed). Can anyone think > of a way to optimize it for answering the question about the location > of a single house-number without having to load all nodes of all ways > that have a name similar to the one in the address?
I don't understand this question. Can you elaborate? > > However I think overlapping ranges can only happen in the same > case where random house-numbers in your scheme will occur...if > people are editing the road and moving nodes around and sometimes > entering garbage (typo, swapped numbers, having >1 node selected,...). No, overlapping numbers will occur if someone enters a range from the first to the third node in a way, and someone else enters another range for the second through the fourth (to give a simplified example). This is not necessarily a problem until you start thinking about the weird numbering cases, or the typos as you mentioned. There's not really a solution for the typos, but their effects can be minimized with my scheme (or at least easier to find and fix). > > A defined algorithm how to interpret the numbers and > interpolate/extrapolate the missing numbers as well as examples for > the usual cases would be a good thing. > (linear-numbered sides, left-right -numbered sides, single house "2b" > in a regular road, road only containing house 12 and 18 but no houses > in between=how to disable interpolation.) In that case you could just omit the street_number_type tag, which makes it a "single" tag, with no implied range. But you wouldn't have to--there are many cases where there are non-contiguous street numbers (especially in rural areas with larger plots). I'd say just don't worry about it and let the "phantom" street numbers exist. > Just to prevent having house-numbers and every piece of software > interpreting them in a different way. > > Marcus _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev
