[Ovmsdev] Locations and scripts

[Stephen Casner]

Greg,

Mine has been quiet for the past couple of months without increasing
the alarm distance beyond the default 500 meters.

                                                        -- Steve

On Wed, 21 Aug 2019, Greg D. wrote:

> A quick follow-up to this thread...
>
> I've noticed that since this past spring that the number of false alerts regarding the
> flatbedding of my Roadster have taken a sharp spike upward. Neither my car's normal
> parking spot in the garage, nor the location of my house / garage have changed. The
> difference in frequency did not appear to coincide with a firmware update, so I'm at a
> bit of a loss to explain it.
>
> Has anyone else noticed this?
>
> Did the Government make a change to the GPS satellite fleet?
>
> Not an issue, really, but definitely something odd going on.
>
> Greg
>
>
> Stephen Casner wrote:
>
> Greg,
>
> Attached are graphs of your data.  gregd.all.png shows all of the
> data, and gregd.peak.png is the highest distance deviation of 369
> meters, which is less than the default 500 meter threshold.
>
> It looks like there is a diurnal pattern to the data with increased
> deviations around midnight local time (the X axis times are UTC).
>
> It also looks like your home elevation must be about 380 meters since
> the altitude variable drops down to negative that amount frequently,
> which would occur when that value is taken as zero (there is a special
> case in the code to treat some values as zero).
>
> I tried overlaying my data and yours, but there seems to be no
> correlation between the peaks in my data and the peaks in yours.
> Interestingly, my data does not show a similar diurnal pattern.
>
>                                                         -- Steve
>
> On Tue, 4 Jun 2019, Greg D. wrote:
>
> 200mb of logs sent to Steve for analysis....
>
> Greg
>
>
> Stephen Casner wrote:
>
> Thanks.  For me, today's log was much quieter.  The maximum excursion
> was 115 meters and it was roughly coincident with loss of lock.
>
>                                                         -- Steve
>
> On Fri, 31 May 2019, Greg D wrote:
>
> Ok.  I'll let it run for a few days and see what happens. Not planning to drive the ca
> r until next week.
>
> Greg
>
>
> On May 31, 2019 2:11:31 PM PDT, Stephen Casner <casner at acm.org> wrote:
>
> On Fri, 31 May 2019, Greg D. wrote:
>
> Tried this, and am not getting anything written to the file system
>
> (vfs
>
> ls /sd shows zero bytes in gps.crtd).  Did I miss some sort of setup
>
> step?
>
> Nothing gets written (or at least the file size as reported is not
> updated) until the recording is stopped with "can log off".
>
>                                                        -- Steve