> Gesendet: Sonntag, 28. Januar 2018 um 07:59 Uhr > Von: Johannes <jo...@posteo.de> > An: dev@openstreetmap.org > Betreff: [OSM-dev] smoothness data in gpx files for GPS tracks on osm.org? > > I consider data on the smoothness/roughness of routes to be quite important.. > > .. record a track as a GPX file enriched with a vibration coefficient ..
There has been some buzz about Android Bump Recorder App, maybe that helps in your endeavour. https://www.heise.de/newsticker/meldung/Smartphones-koennen-Schlagloecher-melden-3935645.html (german link, sorry) It was hard to gain acceptance for the smoothness tag, because it is difficult to translate real world settings _objectively_ into its tag values. Another approach for cyclists to judge the quality of a path or track is to enter data when the surface has last been refurbished / renewed. While this maybe not be as specific, there is often a fair correlation between track age and smoothness. Yes, it matters how and where the surface is exposed to weather conditions, so not every track degrades in the same way even if the materials used to rebuild were of the same quality. The main ad- vantage to smoothness however is, that time of renewal is less debatable / more objective. If one works on an algorithm that considers date of renewal as part of its input to calculate a final smoothness value, one could use it to weigh an intermediate result obtained from other factors, I suppose. Greetings cm _______________________________________________ dev mailing list dev@openstreetmap.org https://lists.openstreetmap.org/listinfo/dev
