[OSM-talk] Defective GPS trace

[Steve Bennett]

I've got a trace from today which is significantly out of sync with a path I
traced from Nearmap:

http://www.openstreetmap.org/edit?lat=-37.880138&lon=145.193417&zoom=19&gpx=594988

The trace looks like I was wandering through the grassy paddock, but I was
actually following exactly that northern most "highway=path" in the bush. So
it looks like the trace is incorrectly recorded something like 50m north of
where I actually was. Now, since the discrepancy seems to go away on that
track a bit further east (later chronologically), presumably the explanation
is the GPS data is faulty. Is this common? I'm new to GPSing, so I'm just
surprised. It's a Garmin Oregon 550. Is there anything I can do to reduce,
or at least detect, such errors?

Steve
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk/attachments/20100102/41147803/attachment.html>