Jan-Benedict Glaw wrote: >Sent: 29 July 2008 11:33 AM >To: Frederik Ramm >Cc: talk >Subject: Re: [OSM-talk] House numbers... One more suggestion > >On Tue, 2008-07-29 12:02:34 +0200, Frederik Ramm <[EMAIL PROTECTED]> >wrote: >> Tagging house numbers onto intersections or ways is just a lame >> workaround employed by many existing data sets because they can't >> model every single house. I have absolutely zero doubt that sooner or >> later, OSM *will* model every single house. At that time, every >> single house will simply be tagged with its address and that's it. > >To me, it looks like a difference between modeling every house (and >adding some kind of address tag) and describing house numbers along a >way for eg. routing purposes. > >There are other schemes, which could work out quite well I guess: > > 119 121 .. 127 129 131 ... 137 139 >... x1 ------------------> x2 -----------------------> x3 ... > 120 122 .. 128 130 132 ... 139 140 > >House numbers are complicated (in a city like Berlin, you'll probably >find non-continuous house numbers, and they not always follow the >even-odd-scheme, and the house number on the opposite side of the >street may even be in a completely other range...) > >x1: housenumber_righthand=120-128/+2 > housenumber_lefthand=119-127/+2 >x2: housenumber_righthand=130-138/+2 > housenumber_lefthand=129-137/+2 >x3: housenumber_righthand=140-148/+2 > housenumber_lefthand=139-147/+2 > >I only picked two tags and overloading them a bit, overloading them >somewhat. It describes a starting house number and the common house >number difference on the right/left side of the street. At least for >Germany, that could describe house number distribution and the >right/left information (which I find *quite* useful!) well enough even >for the more exotic cases. However, it'll be somewhat of a pain >optimizing a way. >
The reason I don't like ideas like this is that the data you are adding to the way (or as Frederik pointed out possibly also the intersections) is not actually anything to do with the physical feature. There are no house numbers or other references on a road, only the name of the street and perhaps a road reference number. Accepted it's a nice easy way to make routing work more easily but that doesn't make it right for our dataset. If we keep and maintain the simple ideal that what we map is what we see then it keeps it all very simple. Routing algorithms may need to be more complex as a result but that doesn't give us an excuse to corrupt our data with misleading information. Cheers Andy _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
