t.
>
> Nowadays you will of course get smaller short-time variations using the more
> intelligent gps-receiver of an iphone, but it probably gives you an
> impression about what is going on there.
>
> Richard.
>
>
>
>>
>> Message: 17
>> Date:
Just to conclude the tale: I have consulted the developers of one of my
favourite apps that tells you how far you’ve walked or cycled (maybe long
journeys as on sees on car satnavs are a different proposition, and I am not so
interested in these for my own purposes). I am not revealing any
To: How to use LiveCode
> Subject: Re: Has anyone experience of GPS on iPhone?
> Message-ID: <074980d0-f69d-45af-9891-5ceb351f3...@mac.com>
> Content-Type: text/plain; charset=utf-8
>
> Bill, I think you are confirming that there is some mystery here. There are a
>
Mark, thanks for that contribution. Looks like more maths is needed. I will
follow up on your approach, as mine really only works if all GPS readings are
nearly accurate. As I have seen accuracies (really inaccuracies!) as large as
65 metres even after a settling-down period, a few of those
Graham,
Mark’s comments make sense. Your quality test where you set the phone down in a
fixed location and look at the results seems good also. If it can’t pass that
test, nothing else will work.
Best,
Bill
William Prothero
https://earthlearningsolutions.org
> On May 6, 2020, at 7:52 AM, Mark
On 2020-05-06 14:09, Graham Samuel via use-livecode wrote:
Bill, I think you are confirming that there is some mystery here.
There are a lot of apps that seem to get location, and measures
derived from location, almost completely right, whereas I am having
trouble doing so with what must be the
Graham,
You have probably done this, but maybe not, so...
I would not process each location changed value as a distance moved. I would
use them to average a new location, and use that location, after averaging, to
calculate the distance moved. Also, location changed messages may not come at
Bill, I think you are confirming that there is some mystery here. There are a
lot of apps that seem to get location, and measures derived from location,
almost completely right, whereas I am having trouble doing so with what must be
the same essential data.
Take the problem of measuring the
Graham,
This makes me wonder how the Google and Apple Maps get their accuracy. When
driving or walking, trying to figure out how to get to an address, it shows me
walking along a street, certainly more accurate than 20meters. Yet, when I’m
wondering where my wife is, and load up “Find My
Thanks Bill for your two messages. I see from the link you gave that the LC
system is (as expected) simply a wrapper for the iOS API, and indeed the term
“horizontal accuracy” is actually used internally in iOS. So it’s unlikely that
LC itself is adding to my problems.
I don’t have access to
-Original Message-
From: use-livecode [mailto:use-livecode-boun...@lists.runrev.com] On Behalf Of
Graham Samuel via use-livecode
Sent: Monday, May 04, 2020 11:37 AM
To: How to use LiveCode
Cc: Graham Samuel
Subject: Re: Has anyone experience of GPS on iPhone?
Thanks Ralph. To answer your
se-livecode [mailto:use-livecode-boun...@lists.runrev.com] On Behalf
> Of Graham Samuel via use-livecode
> Sent: Monday, May 04, 2020 8:07 AM
> To: How to use LiveCode
> Cc: Graham Samuel
> Subject: Has anyone experience of GPS on iPhone?
>
> I’m using GPS on iPhone using
Graham,
You may be way beyond this, but I did a bit of googling and this link looked
relevant.
https://www.smaato.com/blog/optimize-your-location-data-accuracy/
Best,
Bill
William Prothero
https://earthlearningsolutions.org
> On May 4, 2020, at 5:07 AM, Graham Samuel via use-livecode
>
h DiMola
IT Director
Evergreen Information Services
rdim...@evergreeninfo.net
-Original Message-
From: use-livecode [mailto:use-livecode-boun...@lists.runrev.com] On Behalf Of
Graham Samuel via use-livecode
Sent: Monday, May 04, 2020 8:07 AM
To: How to use LiveCode
Cc: Graham Samuel
Subject
Graham,
I would want to be verifying the coordinates with another gps device. I’d also
check it against apps that give lat/Lon.
Bill
William Prothero
https://earthlearningsolutions.org
> On May 4, 2020, at 5:07 AM, Graham Samuel via use-livecode
> wrote:
>
> I’m using GPS on iPhone using
I’m using GPS on iPhone using the various commands and functions available in
LC. Most of this works, but I am having difficulty with the quantity
“horizontal accuracy”. This can be queried via an array which is returned when
mobileCurrentLocation() is executed.
Looking at other iOS apps that
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