> > Yes I know that GPS elevation is not that accurate. > Says who ? I do have a ~10m vertical precision and sometimes less when > stopped > with my Garmin 60cx. > I find it very enough for many many cases, even more than STRM models
Technically the vertical accuracy is always less than the horizontal. The receiver (http://www.point-inc.com/products/gsr1700csx.html) I'm using quotes: Static H: 5.0 mm + 1.0 ppm V: 8.0 mm + 2.0 ppm Kinematic, Stop-and-Go H: 10.0 mm + 1.0 ppm V: 12.0 mm + 2.0 ppm Stand-Alone Position 1.8 m CEP Horizontal I'm using it stand alone, although in theory I could use a UHF link back to a base station in the parking lot. The resultants tracks are a little bit jumpy in the heavily tree-ed enviroment: http://www.openstreetmap.org/user/Mungewell/traces/325254 http://www.openstreetmap.org/user/Mungewell/traces/325256 http://www.openstreetmap.org/user/Mungewell/traces/320570 It doesn't help the accuracy when I fall over though.... ;-) Cheers, Mungewell. > > > > I would like to add a 'ele=xxx' tag to the markers tag at the junction of > > the trails to give some indication of height gain/loss between markers. > > I'm doing it as well, puting in somewhere on a way might be problematic has > someone might mive the node along the way, but if properly tagged at a > mountain_pass, a peak, a crossing, I would find it very usefull. > > > -- > sly > Sylvain Letuffe [email protected] > qui suis-je : http://slyserv.dyndns.org > > > > _______________________________________________ > talk mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
