[mkgmap-dev] The blue circle

Sat Sep 5 09:55:53 BST 2009


Chris-Hein Lunkhusen wrote:
> Hi,
> Sligthy offtopic:
>
> On my ETREX there is a blue circle drawn on the map roundabout
> the actual position. I always thought, that this indicates
> the EPE (estimation of precision).
>
> But I discovered, that the size of the circle is different
> in some maps.
>
> On the All-In-One Map it has a radius of 3 times of
> the EPE value, but on the Topo-Map from geofabrik it is much bigger...
>
> So, what is the secret with the circle?
>   
It depends whether the map is routable or not.

There should be a value in the TRE too to define, but I don't think it 
has been found
> Chris
>
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