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Re: moving to 8 digits of lat/lon (gpxlogger, maybe elsewhere)?

From: Gary E. Miller
Subject: Re: moving to 8 digits of lat/lon (gpxlogger, maybe elsewhere)?
Date: Thu, 3 Sep 2020 12:22:40 -0700

Yo Greg!

On Thu, 03 Sep 2020 15:06:03 -0400
Greg Troxel <> wrote:

> > And some u-blox reports lat/lon to 1e-9 degrees and altitude to 0.1
> > mm. See F9P:  UBX-NAV-HPPOSLLH  
> well, I guess that's 10x more.


> I am a bit shy of rebuilding regression tests myself.  Perhaps I will
> stage things on a branch, keep it rebased, and you can review,

The problem is the pipeline will break, so GitLab omplain.

"scons make-regress" is all it takes.  If you make it an MR I can
check before merging.

> >> And, this is a general proposal that whenever anything in gpsd does
> >> lat/lon, it uses %.8f, basically, and %.3f for height (in meters of
> >> course, and hence mm).a  
> >
> > Works for me.  Maybe evenn %.9f degrees and %.4f meters, so we
> > don't need to do again soon.  
> seems maybe a bit much, but "don't do it again" seems wise, so that's
> ok and I will head for that.

We'll prolly need some client filters so noobs don't freak at the spinning

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703  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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