> 3. I parked my car near a village a day before, marked a waypoint. > The satellite error was at +- 5metres. Today morning, I came back > and marked another waypoint. This time the error was +-4 metres > but this waypoint is 150 metres off the earlier one. The car keys >were with me and I can vouch that my car does not move on its own. :)
I haven't tried to calibrate elevation, assuming the GPS altitude has a large error. But I would have expected the altimeter correction to return to the same altitude after returning to the start point. I actually see a 20-50 Meter error after a route of only a few hours. I doubt that the barometric pressure had changed so much during my trip. _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
