2009/12/17 Shalabh <shalab...@gmail.com>: > On Thu, Dec 17, 2009 at 6:19 PM, Steve Bennett <stevag...@gmail.com> wrote: >> >> Hi all, >> As we all know, you don't "tag for the renderer". However, you want your >> map data to render nicely now, and you want correct map data in the long >> term. >> >> Suggestion: introduce a "fallback" tag. >> >> For example, around my city there are little "reserves" - patches of grass >> reserved by the government for future development such as freeways or train >> lines. They often get tagged "leisure=park", but say I want to start tagging >> them "landuse=reserve" instead. Suddenly, instead of being green on mapnik, >> it will be white again - unrecognised tag. >> >> Solution: tag it like this: >> landuse=reserve >> fallback:leisure=park >> >> That's pretty simple logic to explain to any renderer or editor, and it >> gives people a way to avoid the temptation of "tagging for the renderer", >> and allows them to tag for the future instead. >> >> What do people think? (No comments on how to tag land reserves, it's just >> an example...) >> >> (This case is slightly complicated by the fact that the two tags - landuse >> and leisure - are different. Perhaps a more explicit >> fallback:landuse=leisure:park would be clearer.) >> >> Steve >> >> >> _______________________________________________ >> talk mailing list >> talk@openstreetmap.org >> http://lists.openstreetmap.org/listinfo/talk >> > 1. And what if even the 'fallback tag' is not rendered by the renderer? > 2. Some things may have just no fallback e.g. Mountain passes are not > rendered by most renderers. What would be the fallback tag in such a case. > > In my opinion, this will only confuse the mappers more when they tag a POI. > A few days down the line, we would have many more questions on what should > be the fallback of what and why? > > I would think a better idea is to have atleast one renderer and the main OSM > map to render a superset of all tags.
+1 This should be in the rendering logic, not the map data, otherwise it's no better than tagging things with the icons to use for POIs etc. _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
