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Subject: Re: Deviation plot
From: Chuck Taylor (ctaylor@XXX.XXX)
Date: Tue Feb 05 2002 - 11:31:16 EST
> on 2/4/02 12:47 PM, Chuck Taylor at ctaylor@XXX.XXX wrote:
>
> > The documentation for my Garmin Etrex Mariner GPS defines the following data
> > items:
..
> > Heading - Your moving direction.
And John LeRoy replied:
> Unfortunately the guy who wrote the manual is wrong.
>
> Actually your moving direction is track, sometime called course made good
> (CMG.) The GPS can't possibly know what your heading is ...
Point well taken. That reinforces the point that it is important to be sure that
you know what the GPS means when it says "Heading" (or anything else), because
what it means by "Heading" might not be what you think that word should mean.
Chuck Taylor
Seascape GB32-2
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