OpenStreetMap
Admittedly, the system does lends itself to messing up. I just spent some time figuring out a mess of overlapping ways, missing connections and misplaced signals.
And there the bit that worried me was that placing the intersection marker on a layer above the bridges would cause problems...
As an aside, how do you people tag prisons? That small service way going to the intersection is a prison entrance, but it doesn't show on the map. I'm not clear whether to use a combination of area and amenity tags. Should I go through the trouble of drawing the buildings? Or should I use a point to show on the map? I'm loathe to having both an area and a point to mark something (which is why I keep fixing that in parkings other small things like that). Of course, it's possible that, quite simply, amenity=prison is not currently shown on any renderers to begin with...
Discussion
Comment from djo0012 on 13 October 2008 at 04:12
a think that amenity=prison was the right tag but you can look on the wiki tag page from angland or france I dont remember wich one is the more complete on that part, the canadien one is far from completed... and no you shouldn't put both building and point so up to you to descide what time you spent on that prison.
Comment from Circeus on 13 October 2008 at 06:22
Well, at first I wanted to mark the buildings, but that would belie the facilities real area. Also, way complicated to trace XD
Comment from djo0012 on 14 October 2008 at 03:12
you can look at how the [http://www.openstreetmap.org/?lat=45.50779&lon=-73.56447&zoom=17&layers=B000FTF|place desjardin] is done and find the equivalent for prison
Comment from Circeus on 14 October 2008 at 04:04
Actually, I really don,t like how Place Desjardins was done: it's not a landuse, it's an entire single friggin' building! The way I understand it, it's mapped as if there were four towers within a area of separate commercial building! What I was meaning is that the Orsainvile facility is full of nooks and crannies, and needs, like 6+ multipolygons for good rendering.
Far as I can tell,
amenity=prison<"code> doesn't render anyway, so I'll probably have to trace alanduseorbuildingat some point anyway.