On Wed, May 4, 2011 at 1:22 PM, Peter Oliver <p.d.oli...@mavit.org.uk> wrote:
> It seems like I'm now armed with enough knowledge to get stuck in and start > mapping some footpaths, using whichever tagging method I happen to prefer. > However, both Mapnik and Osmarender display these two supposedly equivalent > forms of footpath differently! Osmarender uses different colours, and > Mapnik replaces a dotted pink line with a dashed black one. While lots of other people have already chipped in, here's my tuppenceworth - OpenCycleMap, in contrast to the layers you mention, doesn't give a fig between them, and converts one method into the equivalent tagging on the other[1]. My opinion is that there's no fundamental difference between the two methods; if there ever was a difference then given 95% of people hold differing opinions as to what the difference was; and that it's up to the renderer to ignore pointless differences in tagging (real, imagined, disputed etc) and produce a useful map[2]. Unfortunately the other renderers have taken the "soft" option and merely given each highway value a different colour and pattern, which helps nobody apart from those who think they are somehow different but has the advantage that the most vocal people one way or another are appeased. If anyone thinks that they mean different things (e.g. paths are muddy, footways are surfaced or somesuch) then the only sensible approach is to explicitly mark those difference (e.g. with the surface tag), due to all the misunderstandings and disagreements that have gone on over the years. Anyway, the rest of your email I agree with, so just crack on with the mapping! Cheers, Andy [1] Which way round is unimportant, but the actual code is at http://gitorious.org/opencyclemap-tagtransform/opencyclemap-tagtransform/blobs/master/transform-paths.xml [2] Oh, and other map styles I've created also abstract the differences away - see the MapQuest and my Transport layers, for example. _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
