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Author Topic: Can't load local geoid model into metashape  (Read 9079 times)

Paulo

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Re: Can't load local geoid model into metashape
« Reply #15 on: February 24, 2021, 01:13:08 PM »
Hello CodiZan,

here is the link to PL EVRF2007 NH geoid file: https://drive.google.com/file/d/1IWjNqVxVrZqgl9Uj2Hfq02-APEaA3u4p/view?usp=sharing. Just copy to the MS geoids folder and you can create your Compound CS as:
Code: [Select]
COMPD_CS["ETRS89 / Poland CS2000 zone 5 + PL EVRF2007 NH height",
PROJCS["ETRS89 / Poland CS2000 zone 5",
GEOGCS["ETRS89",
DATUM["European Terrestrial Reference System 1989",
SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],
TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6258"]],
PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9102"]],
AUTHORITY["EPSG","4258"]],
PROJECTION["Transverse_Mercator",
AUTHORITY["EPSG","9807"]],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",15],
PARAMETER["scale_factor",0.999923],
PARAMETER["false_easting",5500000],
PARAMETER["false_northing",0],
UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2176"]],
VERT_CS["PL EVRF2007 NH",
VERT_DATUM["PL EVRF2007 NH",2005],
UNIT["metre",1,AUTHORITY["EPSG","9001"]]]]
« Last Edit: February 24, 2021, 01:24:54 PM by Paulo »
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Paul Pelletier,
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CoDiZan

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Re: Can't load local geoid model into metashape
« Reply #16 on: February 26, 2021, 12:09:02 AM »
big tx :D :D :D


Corensia

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Re: Can't load local geoid model into metashape
« Reply #17 on: October 04, 2022, 11:36:35 AM »
Hello,

It's been a while since the last post but I'm running into a similar problem with EPSG 5186 and our local geoid.
I'm getting the same "Can't load geoid" error message when I try to add my "Lat/Long/Alt table" txt file.

I've attached the txt file below. Any help or suggestions would be greatly appreciated!

https://drive.google.com/file/d/1E5TaGaHy8V-gVyVOY8SPpc3OOqWJ6Abs/view?usp=sharing

Paulo

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Re: Can't load local geoid model into metashape
« Reply #18 on: October 05, 2022, 07:08:33 PM »
Hello Corensia,

I created your Korea Geoid tif file see first attachment. You can copy into the Agisoft geoids folder.

The prj is also attached ...
Code: [Select]
COMPD_CS["Korea 2000 / Central Belt 2010 + Korea National Geoid",
PROJCS["Korea 2000 / Central Belt 2010",
GEOGCS["Korea 2000",
DATUM["Geocentric datum of Korea",
SPHEROID["GRS 1980",6378137,298.257222101,
AUTHORITY["EPSG","7019"]],TOWGS84[0,0,0,0,0,0,0],
AUTHORITY["EPSG","6737"]],
PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9102"]],
AUTHORITY["EPSG","4737"]],
PROJECTION["Transverse_Mercator",AUTHORITY["EPSG","9807"]],
PARAMETER["latitude_of_origin",38],
PARAMETER["central_meridian",127],
PARAMETER["scale_factor",1],
PARAMETER["false_easting",200000],
PARAMETER["false_northing",600000],
UNIT["metre",1,AUTHORITY["EPSG","9001"]],
AUTHORITY["EPSG","5186"]],
VERT_CS["Korea National Geoid",
VERT_DATUM["Korea National Geoid",2005],
UNIT["metre",1,AUTHORITY["EPSG","9001"]]]]
Also see geoid loaded on top of world Country map

Hope this works for you...
« Last Edit: October 06, 2022, 02:22:30 AM by Paulo »
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Paul Pelletier,
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Corensia

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Re: Can't load local geoid model into metashape
« Reply #19 on: October 06, 2022, 05:25:25 AM »
The tiff file worked perfectly.

Thank you so much Paul!  :)

1Sebastian

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Re: Can't load local geoid model into metashape
« Reply #20 on: March 28, 2023, 03:16:02 PM »
Hi, running in same problem, but for EPSG: 3844 - Pulkovo 1942(58) / Stereo70

Paulo

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Re: Can't load local geoid model into metashape
« Reply #21 on: March 28, 2023, 05:28:17 PM »
Hi, running in same problem, but for EPSG: 3844 - Pulkovo 1942(58) / Stereo70
the EPSG::3844 CS is already present in Metashape. You have to choose the correct transformation set (7 parameters) to suit your needs. As seen in attachement, there are many transformation options in ToWGS84 drop down menu....

If you want to use the transformation parameters published by https://epsg.io/3844, then you can import attached prj file...

However these parameters correspond to option EPSG::15995 in drop down menu

Hope this helps,
« Last Edit: March 28, 2023, 05:45:30 PM by Paulo »
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Paul Pelletier,
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MYCH

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Re: Can't load local geoid model into metashape
« Reply #22 on: March 01, 2024, 07:52:45 AM »
Hi

After many attempts, I am still unable to load a local geoid into Metashape. Appreciate if someone can advise whether the file is not compatible.

https://drive.google.com/file/d/1OO8LO6-PJojEZYfT_GS_9fdT_Xmze2z2/view?usp=drive_link

Thanks.


Paulo

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Re: Can't load local geoid model into metashape
« Reply #23 on: March 01, 2024, 10:48:48 AM »
Hi MYCH,

it seems the gsf file is corrupt as when I load into GM, I get many deep blue values (no data) and in regular strips. Seems that bounds or number of columns, rows is incorrect. I get same corrupt file when I generated the gsf from old Ashtech Geo file...

Probably need to contact MyGEOID and see if you can get a correct geoid file...
« Last Edit: March 01, 2024, 11:18:50 AM by Paulo »
Best Regards,
Paul Pelletier,
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Paulo

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Re: Can't load local geoid model into metashape
« Reply #24 on: March 01, 2024, 02:13:10 PM »
Hi again,

I think I found how to correct the file. The columns and rows numbers were inverted....

Now I created a Tif for MyGeoid 2004 and just copy into your Agisoft Geoids file.

Attached is tif file and screen capture showing geoid with 2 points on sea side with their geoid values...

You can also use following compound prj file:
Code: [Select]
COMPD_CS["GDM2000 + MyGeoid 2004 height",
GEOGCS["WGS 84",
DATUM["World Geodetic System 1984 ensemble",
SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],
TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9102"]],AUTHORITY["EPSG","4326"]],
VERT_CS["MyGeoid04 height",
VERT_DATUM["Malaysia 2004",2005],
UNIT["metre",1,AUTHORITY["EPSG","9001"]]]]

I hope it works for you,
Best Regards,
Paul Pelletier,
Surveyor

MYCH

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Re: Can't load local geoid model into metashape
« Reply #25 on: March 04, 2024, 09:54:13 AM »
Hi Paulo

Thanks a lot!! It has been successfully loaded now. 
This community is so lucky to have you.