Oliver Eichler wrote:

>> If you have all information and points recorded with a fixed  
>> sample rate you
> can apply algorithms to  minimize the error. But with the shit  
> recorded by
> Garmin you can't do anything.

With respect, so many mappers' idea of "tracing" is 1 node/500m that  
the alleged error in GPS reception is utterly, utterly irrelevant.

When people learn to draw decent curves with polylines, _then_ we'll  
start worrying about GPS accuracy.

http://wiki.openstreetmap.org/index.php/ 
Editing_Standards_and_Conventions#Accuracy

cheers
Richard

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