On Wed, January 20, 2010 20:57, Craig Wallace wrote: <snip> > Most GPS devices will always record the tracklog in WGS84 datum, no > matter what the GPS is set to. So you can set it to your local grid / local > datum if you want, the tracklog will still be WGS84. All this affects is > the numbers displayed on the screen. > > I'm pretty sure this is case for all Garmin GPS devices. Though other > brands may be different, so worth checking.
I don't know if the datum affects the *stored* track points, but it does affect the *reported* lat/lon in NMEA sentences. At least it does on a Garmin Geko 201. Something to be aware of if you are doing live GPS tracking. Since this is a newbies list I would recommend that everyone should use the WGS84 datum (and definitely for OSM) except when you know you don't want it. HTH, A _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
