Do you all agree with these wiki edits? http://wiki.openstreetmap.org/w/index.php?title=Key%3Atracktype&diff=1002090&oldid=992679
http://wiki.openstreetmap.org/w/index.php?title=Template%3AMap_Features%3Atracktype&diff=1002096&oldid=971383 http://wiki.openstreetmap.org/w/index.php?title=Key%3Asmoothness&diff=1002098&oldid=905282 http://wiki.openstreetmap.org/w/index.php?title=Key%3Asurface&diff=1002099&oldid=970317 On Sun, Mar 16, 2014 at 6:07 PM, Fernando Trebien <[email protected]> wrote: > On Sat, Mar 15, 2014 at 6:41 PM, Martin Koppenhoefer > <[email protected]> wrote: >> >> 2014-03-15 16:29 GMT+01:00 Fernando Trebien <[email protected]>: >> >>> "tracktype" is the "degree of compaction" of the material >>> (regardless of material) >> >> >> >> I have always more thought of it "how much it was constructed", while >> tracktype=1 is a paved road, 5 will be a track on grass (almost or not >> constructed at all) and the rest in between. Generally a tracktype=grade1 >> should be easily navigable by bike or foot also after days of rain while for >> grade2 you would hope so and grade3 is not clear, 4 and 5 probably not. In >> the end it is a generalized hierarchical system that comprises several >> single characteristics to come to a summarizing tag value (and the single >> characteristics are not documented and may vary on individual basis). >> Somehow it still works as you can compare the values with other tracks in >> the same area. > > Hm I think that someone on a city bike (not on a mountain bike) would > find tracktype=grade2 somewhat inconvenient, but still usable indeed. > > Anyway, I'm making these questions because thinking of "degree of > compaction" (same as "hardness" maybe) makes tracktype essentially > independent from both smoothness and surface tags. You can then guess > more accurately things such as expected speed, comfort level, draft > forces, and the risk of getting bogged. > > One question: do you think that an almost flat natural rock path > should be tracktype=grade1 (because it's closer to "compacted") or > tracktype=grade5 (because it's not "constructed")? > >> >> >>> >>> - "smoothness" is the "degree of irregularity" of the surface (for >>> wheeled vehicles, also regardless of material) >> >> >> >> yes. in other words how "smooth" or "even" the surface is. >> >> >>> >>> - "surface" more closely represents the material structure, usually >>> regardless of other characteristics (with a few exceptions) >> >> >> >> yes, surface is a mixture of the ~material (roughly classified) and in some >> cases the way of application / the overall structure (e.g. cobblestones). >> >> cheers, >> Martin >> >> _______________________________________________ >> Tagging mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/tagging >> > > > > -- > Fernando Trebien > +55 (51) 9962-5409 > > "The speed of computer chips doubles every 18 months." (Moore's law) > "The speed of software halves every 18 months." (Gates' law) -- Fernando Trebien +55 (51) 9962-5409 "The speed of computer chips doubles every 18 months." (Moore's law) "The speed of software halves every 18 months." (Gates' law) _______________________________________________ Tagging mailing list [email protected] https://lists.openstreetmap.org/listinfo/tagging
