GPS positions with companion app

[Dirk Hohndel]

On Fri, Jun 26, 2015 at 05:09:06PM +0800, Miika Turkia wrote:
> >>
> >> I can stare at the code a bit to see if I see a problem, or I can add some
> >> verbose debugging option that allows us to see which fixes it picks and
> >> why.
> >
> > I did stare at the code and the more I did so the less the code made
> > sense. So I did the obvious thing and rewrote it :-) ... and added a TON
> > of debugging statements. This was pushed to master and daily builds have
> > been triggered.
> 
> Well, I just got a segmentation fault, but when running under gdb, all
> went fine.

Always a sign of quality software...

> ---8<---
> processing gpsfix @ "Fri Jun 26, 2015 2:05 PM" which is withing six
> hours of dive from "Fri Jun 26, 2015 2:14 PM" until "Fri Jun 26, 2015
> 3:31 PM"
> look at the next gps fix @ "Fri Jun 26, 2015 2:08 PM"
> which is closer to the start of the dive, do continue with that
> processing gpsfix @ "Fri Jun 26, 2015 2:08 PM" which is withing six
> hours of dive from "Fri Jun 26, 2015 2:14 PM" until "Fri Jun 26, 2015
> 3:31 PM"
> look at the next gps fix @ "Fri Jun 26, 2015 3:38 PM"
> pick the one before as it's closer to the start
> Segmentation fault

Very promising. I'll look into this. Most likely running under valgrind
would point at my errors pretty quickly.

> > Miika, I would love it if you could try this (but I understand if you
> > don't have the time or network bandwidth to do so). I think the debug
> > messages are verbose enough to make it easy to track down what happened
> > and why the fixes are chosen.
> 
> I think I got correct locations today. I'll try to test this a bit
> more, purely for the benefit of all :D

Your sacrifice is noted.

> It feels like Subsurface is quite slow to start up nowadays. I wonder
> if this is related to my lightening fast (read incredibly slow)
> Internet connection.

If you use the cloud storage, then yes, it tries to pull from the remote
repo. Eventually the goal is to have a progress bar (or to simply do this
in the background and simply disable anything that would modify the local
dive list while that's happening). On my infinitely long todo list.

> Also the IOS companion app is very slow to realize there is no
> Internet connectivity when I am attempting to start logging.
> (Workaround: quit and open up the app to trick it to notice syncing is
> not going to happen.)

That app was written in last year's GSoC. It hasn't really been
maintained, since. You could contact the student (who now has a full time
job that keeps him very busy) directly with feedback...

/D