Re: ppp averaging and circular error of probability

[gpsd]

Yo Gary,

many thanks for your swift reply.

On 09.09.22 22:13, Gary E. Miller wrote:
> Yo gpsd---!
> > If someone is interested I can also support the 10mb plot file.
> I would prefer the raw data, then I can make my own plot file and
> see for myself.  Maybe even fix it.

Sorry for my stupid question: which raw data ?

This I have done:

      FILENAME=scatter72h_f9p_mnt
      dc <<< '10k 86400 3 * p'
      gpsprof -n 259200   -T pngcairo localhost:gpsd:/dev/serial0 > 
$FILENAME.plot
      gnuplot < $FILENAME.plot > $FILENAME.png
      display scatter72h_f9p_mnt.png

I have a plot file and a png file.

But should I do it in a different way, so I can do it.

> > I also calculated the distance between the different results. They
> > are all below 4 cm. So I am not sure if this CEP gives a useful
> > information at all.
> My mind reading is not good at this distance.  Can you show your work?

I calculated the distance for the result for 3 days to the result for 2 
days. And then the 3 days result to a 24h result. And the 2 days result 
to 24h , and so on

# haversine_dist_ksh 48.149295051 16.283842249 48.149294787 16.283842015
DIST = 0.034 m
BEARING = 210.599 deg
# haversine_dist_ksh 48.149295051 16.283842249 48.149294919 16.283841993
DIST = 0.024 m
BEARING = 232.302 deg
# haversine_dist_ksh 48.149294787 16.283842015 48.149294919 16.283841993
DIST = 0.015 m
BEARING = 353.655 deg

Have done this with all combinations. I wrote my own script 
"haversine_dist_ksh" as I didn't find an online tool which works on cm 
base. Maybe there is one anywhere.


Kind regards

Hans