2009/2/15 David Lynch <[email protected]>: > On Sun, Feb 15, 2009 at 10:23, Martin Koppenhoefer > <[email protected]> wrote: >> 2009/2/15 Knut Arne Bjørndal <[email protected]>: >>> >>> >>> I also seem to recall that if I drew the buildings above the road core >>> roads could easily get swallowed completely in some cases, which is a >>> bad idea. >>> >> >> of course the road would get swallowed when the buildings are mapped >> on them, but this is bad mapping, and not bad rendering. > > Is accurately mapping a building that was built above or below a road > "bad mapping?"
well, it depends how it is tagged. "Accurately mapping" implies clearly that the mapping is correct, but I wonder whether different people have different ideas about what is considered correct. - For a building above a road I would tag the road tunnel (less correct but better rendering result) or the building bridge (more correct but rendering worse). - For a building below the road we are AFAIK still missing tags and rendering rules, but I'm also interested in mapping them. The generic layer=-1 for the building should at least solve the situation a little bit regarding the rendering. This is not the most usual occurence of neighbouring buildings and streets though, so I wouldn't consider it the standard case for determining the best default rendering order. > Or accurately mapping the pedestrian streets in > Edinburgh, Scotland (and some other old European cities, I assume) > that are only just wide enough for two broad-shouldered adults to > pass? well those for example I would not consider pedestrian but footway (and bicycle=yes if applies), but anyway they would display better in mapnik-rendering-order (the one I'm suggesting for t...@h as well) than in current t...@h. > It sounds like you're implying that anywhere that the rendering > of a building happens to cover the rendering of a road is the mapper's > fault, when there are plenty of places that pure geographic accuracy > would result in an unusable map. No, I don't even consider covering of a street by a building a problem. Mapnik proves that it is better, just check various places in densely mapped areas. Find solutions (proposals above) to get usable maps AND geographic accuracy together. Btw.: we are not drawing maps but feeding a geodatabase. Martin _______________________________________________ Tilesathome mailing list [email protected] http://lists.openstreetmap.org/listinfo/tilesathome
