[OSM-newbies] comparison between gpx results

[Robert Hart]

> When I load both tracks on JOSM, the difference between the tracks
> are too big. so I feel a bit concerned about the results. So I am
> concerned which one I should use.
>
> Cheers,
>
> Francis


how big is "too big"? It is quite common for two GPS trails taken at
different times to differ by a substantial amount, especially if you had a
poor signal at the time.

Does your GPS give an indication of the number of satellites it's getting a
signal from?
In my experience you need at least 5 well spaced satellites before you can
start pointing the finger at other data, sources of error.

Rob

-- 
Robert Hart
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