[Loadstone] Accurate point entry

Mikolaj Rotnicki mikolaj-rotnicki at o2.pl
Sun Jul 1 11:18:37 BST 2007


Hello,

Check Wikipedia at
http://en.wikipedia.org/wiki/List_of_time_zones
for the full list of timezones.

Accually they very from UTC-12 to UTC+14, and there are even few time zones 
like UTC+5:45 and UTC+12:45.

Mikolaj

----- Original Message ----- 
From: "David Allen" <wd8ldy at xtra.co.nz>
To: <loadstone at loadstone-gps.com>
Sent: Sunday, July 01, 2007 2:18 AM
Subject: Re: [Loadstone] Accurate point entry


> Hi Shawn and list!
>
> +12:30 is the highest. If I ever need to go out to the Chathams, I'll need
> that offset.
>
> Cheers,
> Dave
> ----- Original Message ----- 
> From: "Shawn Kirkpatrick" <shawn at odyssey.cm.nu>
> To: <loadstone at loadstone-gps.com>
> Sent: Sunday, July 01, 2007 11:58 AM
> Subject: Re: [Loadstone] Accurate point entry
>
>
>> Yeah, the +12:30 offset could be added to the list. I didn't think there
>> were any time zones after +12:00. Anyone know how high this can go?
>>
>> On Sun, 1 Jul 2007, David Allen wrote:
>>
>>> Hi Shawn and list!
>>>
>>> Many thanks for the explanation of accuracy. Now I do have a much better
>>> understanding of it.
>>>
>>> Checked out the geocoder yesterday as well. It even has NZ information
>>> which
>>> will be handy for planning.
>>>
>>> The time offset feature is nice to keep time synced with GPS. Buyt I
>>> could
>>> not find +12:30 in the list. Can that be considered for the next 
>>> version?
>>>
>>> Cheers,
>>> Dave
>>> ----- Original Message -----
>>> From: "Shawn Kirkpatrick" <shawn at odyssey.cm.nu>
>>> To: <loadstone at loadstone-gps.com>
>>> Sent: Saturday, June 30, 2007 11:50 PM
>>> Subject: Re: [Loadstone] Accurate point entry
>>>
>>>
>>>> You want a low accuracy value if possible. The lower the better. It's 
>>>> an
>>>> approximation of how accurate your gps receiver thinks the information
>>>> it's
>>>> giving is. If you multiply this number by 8 you should get the accuracy
>>>> in
>>>> meters. This will probably be in the next version of loadstone so this
>>>> will
>>>> mean something useful.
>>>> Standard gps accuracy is around 15 meters. Sometimes it's better and
>>>> sometimes it's worse but around the 15 meter range is normal.
>>>> A lot of other factors will effect this thoe. Your receiver, weather
>>>> conditions, reflections, etc.
>>>>
>>>> On Sat, 30 Jun 2007, David Allen wrote:
>>>>
>>>>> Hi Brett and list!
>>>>>
>>>>> Thanks for the info. Yes, you've opened up something that I've 
>>>>> wondered
>>>>> about. - this accuracy reading. I've checked that a lot but didn't
>>>>> understand (and not sure I do yet) what it means. The other day, I had
>>>>> a
>>>>> result of something like 50 when I pressed accuracy. Usually, it is
>>>>> between
>>>>> 1 something and 3 something.
>>>>>
>>>>> I have turned off power saving and my points that i've played with
>>>>> today
>>>>> do
>>>>> seem a bit closer than they were previously. But this drift thing is
>>>>> definitely something to keep in mind. Maybe I chose the wrong 
>>>>> receiver,
>>>>> but
>>>>> since I do a fair amount of travelling in various cars, the comments
>>>>> about
>>>>> that in the FAQ were my deciding guide, besides local availability and
>>>>> affordability, of course. While heading seems to change even though I
>>>>> haven't changed my direction, I still believe it isn't as wrong as the
>>>>> Robotron talking compass which I returned after a week. That thing was
>>>>> hopeless, at least in New Zealand. I said it guessed a direction each
>>>>> time
>>>>> you pushed the button and gave you an answer, whether it meant 
>>>>> anything
>>>>> or
>>>>> not.
>>>>>
>>>>> Cheers,
>>>>> Dave
>>>>>
>>>>> of course
>>>>> ----- Original Message -----
>>>>> From: "Brett" <brett06 at tpg.com.au>
>>>>> To: <loadstone at loadstone-gps.com>
>>>>> Sent: Saturday, June 30, 2007 6:01 PM
>>>>> Subject: Re: [Loadstone] Accurate point entry
>>>>>
>>>>>
>>>>>> Hi David,
>>>>>>
>>>>>> I find you get more accurate positioning if once you have established
>>>>>> a
>>>>>> connection with your GPS receiver, go in to the GPS menu of Loadstone
>>>>>> and
>>>>>> turn off "power saving". This seems to cause my receiver to get
>>>>>> stronger
>>>>>> reception. Also when checking the accuracy of your points, try to do
>>>>>> them
>>>>>> when moving. The SIRF3 chipsets do have quite a bit of drift when
>>>>>> standing
>>>>>> still, so it could be that the drift is causing your point to seem in
>>>>>> accurate. If I walk past my local bus stop and check the accuracy of
>>>>>> my
>>>>>> point, it is usually with in 3 to 4 meters. But when I check it while
>>>>>> standing still at the bus stop, it can be anywhere from 3 to 15
>>>>>> meters,
>>>>>> because of the drift in the Sirf3 chipset when standing still. You
>>>>>> need
>>>>>> to
>>>>>> keep this in mind when evaluating the accuracy of your points.
>>>>>>
>>>>>> Hope this helps,
>>>>>> Brett.
>>>>>>
>>>>>>
>>>>>> ----- Original Message -----
>>>>>> From: "David Allen" <wd8ldy at xtra.co.nz>
>>>>>> To: <loadstone at loadstone-gps.com>
>>>>>> Sent: Saturday, June 30, 2007 1:29 PM
>>>>>> Subject: [Loadstone] Accurate point entry
>>>>>>
>>>>>>
>>>>>>> Hi list!
>>>>>>>
>>>>>>> Well this is probably a beginner's question, too, but I know 
>>>>>>> everyone
>>>>>>> was
>>>>>>> a
>>>>>>> beginner sometime.
>>>>>>>
>>>>>>> I understand that positions marked inside wouldn't be accurate. I
>>>>>>> also
>>>>>>> understand that entering points while stationary isn't useful. But
>>>>>>> here's
>>>>>>> the thing. I've tried entering points outside while in motion and
>>>>>>> these
>>>>>>> don't seem to be any more accurate than  the inside ones. How can I
>>>>>>> improve
>>>>>>> on this? I recently was at a place where I entered a point 
>>>>>>> yesterday.
>>>>>>> Loadstone told me that the point was 12 Metres away at 12 o'clock.
>>>>>>> Now
>>>>>>> I
>>>>>>> know exactly where I was.
>>>>>>>
>>>>>>> I suspect the number of sattelites that are visible can be a factor
>>>>>>> in
>>>>>>> making your position more accurate as well. Is there a way of
>>>>>>> improving
>>>>>>> on
>>>>>>> that? I know that buildings can corrupt signals, so how far must you
>>>>>>> be
>>>>>>> from
>>>>>>> a building to keep it from distorting your reception? Can a fence
>>>>>>> cause
>>>>>>> a
>>>>>>> problem? For example, one of the points I entered is very near a
>>>>>>> fence
>>>>>>> and
>>>>>>> it is taller than I am. Oh, the pains of being short. But anyway,
>>>>>>> these
>>>>>>> are
>>>>>>> the things that I'm wondering as I begin to develop my own ideas
>>>>>>> about
>>>>>>> entering points.
>>>>>>>
>>>>>>> I wish there was a way of changing the measurements used. I can
>>>>>>> appreciuate
>>>>>>> that I live in a metric country so everything here is in metres. But
>>>>>>> I
>>>>>>> find
>>>>>>> it harder to reconcile the distances mentioned in my mind. After 
>>>>>>> all,
>>>>>>> since
>>>>>>> this is a personal thing we're doing for ourselves by entering
>>>>>>> points,
>>>>>>> shouldn't we have measurements that make sense to us? Maybe this
>>>>>>> functionality is already there, and I've missed it. If it isn't,
>>>>>>> perhaps
>>>>>>> it
>>>>>>> could be looked at.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Cheers,
>>>>>>> Dave
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Loadstone mailing list
>>>>>>> Loadstone at loadstone-gps.com
>>>>>>> http://www.loadstone-gps.com/mailman/listinfo/loadstone
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> No virus found in this incoming message.
>>>>>>> Checked by AVG Free Edition.
>>>>>>> Version: 7.5.476 / Virus Database: 269.9.12/878 - Release Date:
>>>>>>> 28/06/2007
>>>>>>> 5:57 PM
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Loadstone mailing list
>>>>>> Loadstone at loadstone-gps.com
>>>>>> http://www.loadstone-gps.com/mailman/listinfo/loadstone
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Loadstone mailing list
>>>>> Loadstone at loadstone-gps.com
>>>>> http://www.loadstone-gps.com/mailman/listinfo/loadstone
>>>>>
>>>> _______________________________________________
>>>> Loadstone mailing list
>>>> Loadstone at loadstone-gps.com
>>>> http://www.loadstone-gps.com/mailman/listinfo/loadstone
>>>
>>> _______________________________________________
>>> Loadstone mailing list
>>> Loadstone at loadstone-gps.com
>>> http://www.loadstone-gps.com/mailman/listinfo/loadstone
>>>
>> _______________________________________________
>> Loadstone mailing list
>> Loadstone at loadstone-gps.com
>> http://www.loadstone-gps.com/mailman/listinfo/loadstone
>>
>
> _______________________________________________
> Loadstone mailing list
> Loadstone at loadstone-gps.com
> http://www.loadstone-gps.com/mailman/listinfo/loadstone 



More information about the Loadstone mailing list