Updates

Donald E Robinson

Active Member
I posted this back in September, but didn't really get an answer...

"Just wondering.... I have not received any updates in a quite a while. I used to get GeoData updates every month or two. I check regularly, every time I boot up the LS. My current GoeData file is 2.7.5.20531. Is this the curent file?"

I still have received any updates.
 

Nate The Surveyor

Well-Known Member
The report I have is that: "Javad was using early users as BETA testers. Now that we are established, and users don't need units with bugs, we are restricting new releases to MUCH more de bugged and tested software, so that the end user's production is not poorly effected, by pre mature software releases".
(I wrote that, as a condensed version of a number of conversations, with various persons, involved.
Maybe this will help.
N
 

Donald E Robinson

Active Member
Thanks Nate!
I was under the impression that the GeoData was updated regularly for continuous adjustments. I was just getting a little worried that everytime I check for updates I was advised that I was already up to date and I thought that I may have a bug in the system.
 

Shawn Billings

Shawn Billings
5PLS
GeoData only changed with new projections datums and were mostly driven by new projections being added for countries outside of the United States. I don't think anything, except for the occasional new Geoid model has changed with US datums or projections or reference frames (HTDP) in quite a while.
 

Donald E Robinson

Active Member
GeoData only changed with new projections datums and were mostly driven by new projections being added for countries outside of the United States. I don't think anything, except for the occasional new Geoid model has changed with US datums or projections or reference frames (HTDP) in quite a whil
Thanks Shawn. One more question...
I started a 146 acre boundary survey late last year and this year, it's been expanded to with additional 108 acres (254 acres). This year NC changed from US Survey Feet to Internation Feet. I changed this setting in my Triumph LS and now the new coordinate points have shifted 0.32' north and 4.27' east, compared to last years the US Feet coordinates. Should I be concerned?
 
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Nate The Surveyor

Well-Known Member
Well, if I may chime in here.
Are you using a localize? If so, your local coords will change very little.
Have you got the coords out of your LS, and drawn phase one? They are not going to be the same.
If it were me, I'd consider leaving it all alone. Stay with the previous iteration.
Kinda like changing to metric bolts on an older American car. It can be done, but it's not worth it.
My thots.
N
 

Donald E Robinson

Active Member
Thanks or the feedback Nate.
I just adjusted the current coodinate file to and updated last years file. I use the Lat/long and distances to the CORS locations in my survey reports and the distances did change(~0.01/mile).
 

nusouthsc

Active Member
Thanks Shawn. One more question...
I started a 146 acre boundary survey late last year and this year, it's been expanded to with additional 108 acres (254 acres). This year NC changed from US Survey Feet to Internation Feet. I changed this setting in my Triumph LS and now the new coordinate points have shifted 0.32' north and 4.27' east, compared to last years the US Feet coordinates. Should I be concerned?
Donald,
That sounds about right. Im in SC and the difference where Im at is about 3.5’. We dealt with this years ago when GNSS started really catching on. The infamous 3.5’ was a sure sign of a USft/Intft issue.
 

Adam Plumley

Active Member
JAVAD GNSS
Donald, it's my understanding that the US Survey foot should still be used with the current system in North Carolina. Nad 83 2011 SPC. When the new datum comes out in a couple years is when the unit change happens. Am I missing something?
 

Adam Plumley

Active Member
JAVAD GNSS

EmPwUNMeO9ccwb9wuqc684Im2oUkSoubo0EeBg0St8QAQxrARLe5SL9ddwPGy5dXGWDXRRXmCDEopOMnNxSNbeuUht4wXkSUddQWgltJbTfE3TDPUYo=s0-d-e1-ft

DATE: February 7, 2023
FOR IMMEDIATE RELEASE
Contact: Brian R. Haines 919-825-2390
brian.haines@ncdps.gov
The Retirement of the United States Foot

RALEIGH: Now that we have stepped into a new year it is time to put an international foot forward. The U.S. survey foot was retired at the end of 2022 by the National Institute of Standards and Technology (NIST) and the international foot is stepping up to take its place. This is due in part to the modernization of the National Spatial Reference System (NSRS) and to provide national uniformity in measuring length.

In North Carolina, the U.S. survey foot is defined in NC General Statute 102-1.1 as the conversion from meters, with one meter being equal to 39.37 inches or a little over 3.28 feet. North Carolina will continue to use the U.S. survey foot for surveying, mapping and other activities that utilize the current North Carolina State Plane Coordinate System until the National Oceanic and Atmospheric Administration’s (NOAA’s) National Geodetic Survey (NGS) publishes the 2022 datums in 2025. The North Carolina Geodetic Survey recommend that the U.S. survey foot be used with the current horizontal (North American Datum of 1983/2011) and vertical (North American Vertical Datum of 1988) datums. The international foot will be used in North Carolina when the new datums are published by NGS in 2025 unless required by contract requirements to use the international foot.

The U.S. survey foot was originally adopted in 1893 but was updated in 1959 by a difference of two parts per million shorter, or the equivalent of approximately 1/100 of a foot per mile. This change was adopted by several other nations and came to be known as the international foot, moving the world a tiny leap forward. Tiny unless you are measuring hundreds of miles or more or working in the State Plane Coordinate System, then that difference can be measured in feet and that impacts things such as mapping and surveying.

The NSRS standard unit of measurement is a meter, which is in line with the international foot and many applications in the United States have been using the international foot for a long time. However, the 1959 change allowed for a temporary use of the U.S. survey foot for geodetic surveying until the geodetic control networks of the United States could be adjusted. The readjustment was completed in 1986 but the U.S. survey foot continued to march on in most of the states. The intent of the Federal Register Notice to retire the U.S. survey foot by NIST and NGS is to finalize its departure into the history books and use the international foot in conjunction with the modernization of the NSRS in 2025.

Read more about the retirement of the U.S. Survey Foot.
 
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