That is absolutely fantastic - cant wait to see it. BJ

Sent from my iPhone

On 21/09/2012, at 12:20, Russell Edwards <russ...@edwds.net> wrote:

> Hi all,
> 
> On this topic -- for what it's worth I have written a JOSM plugin to help 
> with GPS accuracy in the case of having multiple tracks covering the same . 
> You can highlight a set of GPX tracks along a straight path (or taken from a 
> fixed position) and it will a) average them all to find their geometric 
> centre and b) find the direction of maximum variation, to find the likely 
> direction of the path along which they were recorded.
> 
> I hope to have it available within the next week or two. You should get an 
> accuracy improvement factor of equal to or greater than the square root of 
> the number of tracks.  When you have dozens or hundreds of tracks on the same 
> paths, as I do (logs from my runs around town), then it should be a great 
> help in pinning down any offset in the imagery (and potentially, rotation, 
> too).
> 
> Russell
> 
> 
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