Thanks, Keith. I'll stick with this MotionX for now, as it seems very popul=
ar and hopefully there are good reasons for that. It has display modes othe=
r than DMS that show more effective decimal places that I can use if necess=
ary, but I'll reserve judgement about whether it's necessary until I've tes=
ted out the repeatability of the iPhone's GPS. If it can lead me back to my=
equipment to within a few metres then I'll seek more decimal places for th=
e seconds, otherwise I'll enjoy having to record less of them.
> -----Original Message-----
> On Behalf Of Keith Smith
> Sent: Thursday, 27 June 2013 6:18 AM
> Subject: Re: [Nature Recordists] Re: Coordinates from iPhone
> Hi Peter,
> I just took my old 3G out (still use it for an alarm clock).
> I have a an App called GPS Kit that reports DDD.ddddd Sounds
> like it might be up your alley There is now a version called
> GPS Pro (of course) that I would guess has more display options.
> Even on the 3G it was a nice prog and not much money iirc.
> Also on Android there is GPS Essentials which has a very nice
> dashboard screen with lots of configurable data slots that
> shows DDD.MM.SS.s I don't know if it's also available on iOS k
> On Wed, Jun 26, 2013 at 12:10 PM, Peter Shute
> < <pshute%40nuw.org.au> > wrote:
> > **
> > On 27/06/2013, at 12:22 AM, "Keith Smith"
> < <kahsmith%40gmail.com> > wrote:
> > > If you enjoy the extra precision, go for it. Just don't
> confuse it
> > > with accuracy. You may have readings 0.01" or better and
> a limit of
> > > +/-5 -
> > 30m
> > > at the same time, so it gets misleading. It will also
> depend on your
> > > location and topography, how many satellites can see you, and
> > > weather systems. I suspect you may enjoy somewhat better
> > > repeatability in .au
> > than
> > > I do in .ca.
> > I must admit I haven't tried the iPhone's GPS much yet, and it may
> > turn out that it's not as good as my Blackberry was. In an
> ideal world
> > we would all record measurements to a precision matching their
> > accuracy, but I suspect most of us simply record whatever
> the display
> > says, for the sake of consistency. Eg so we can be sure the
> last bit
> > isn't missing simply because we forgot to record it.
> > In the case of this MotionX app, I suspect it only displays to the
> > nearest second in DM=A6 format for cosmetic reasons. The D and DM
> > formats display to the equivalent of 0.0036" and 0.006", ie they've
> > just displayed what fits nicely. Hopefully they'll squeeze
> in another
> > dp in the DM=A6 format, and I'll be happy.
> > Peter Shute
> Keith Smith - Freelance Guitarist & Location Recording