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Re: [gpsd-dev] [RFC] $GPVTG & magnetic course

From: Gary E. Miller
Subject: Re: [gpsd-dev] [RFC] $GPVTG & magnetic course
Date: Wed, 30 May 2018 15:45:11 -0700

Yo teyrana!

On Wed, 30 May 2018 18:39:09 -0400
teyrana <address@hidden> wrote:

> Another idea for extract the $GPVTG message data was to stored the
> compass variation in existing variables, like so:
> > session->gpsdata.navdata.compass_variation = true_track -
> > mag_track;  
> Yay or nay?

Yeah, that works.  Just remember some other sentence may also supply
in that data item.  Presumably they would match.

I've not look at that code, so take care that users of compass_variation
can tell good from bad data in taht feild.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can’t measure it, you can’t improve it." - Lord Kelvin

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