[OSM-dev] Garmin GPX madness

[Oliver Eichler]

On Sunday, 21. September 2008 13:41:58 David Earl wrote:
> On 20/09/2008 22:08, Stefan de Konink wrote:
> > I sincerely wonder why anyone in the community would buy a Garmin as
> > tracking device after (s)he is aware that the device doesn't report
> > h-/v-/p-dop. This is even more basic functionality...
>
> I have no idea what "h-/v-/p-dop" means so it would hardly be a reason
> for me not to buy one! Am I alone in not understanding your acronym?
>
> Mine seems to do the job I bought it for, at competitive price. I wish
> it had one-touch auto-numbered waypoints though.

It's the horizontal, vertical and positional dilution of a GPS position, due 
to satellite position. Without that it's hard to judge the quality of a 
track. See wikipedia on "DOP".

You can derive this information from the almanach later on, but it would be 
nice to have it recorded, too. Next to other information like velocity and 
heading. 

Oliver