8000 Database: update to EPSG 12.014 by rouault · Pull Request #4540 · OSGeo/PROJ · GitHub
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Database: update to EPSG 12.014 #4540

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Merged
merged 1 commit into from
Jul 6, 2025
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rouault
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@rouault rouault commented Jul 5, 2025

The main change is the improved metadata accuracy declaration for "WGS 84 to EGM2008 height (1)" from 1 m to 0.113 m.

And also the mention to cdn.proj.org GTG grids for EGM96 and EGM2008 :-)

The main change is the improved metadata accuracy declaration for
"WGS 84 to EGM2008 height (1)" from 1 m to 0.113 m.

And also the mention to cdn.proj.org GTG grids for EGM96 and EGM2008 :-)
@rouault rouault added this to the 9.7.0 milestone Jul 5, 2025
@rouault rouault added the funded through GSP Work funded through the GDAL Sponsorship Program label Jul 5, 2025
@jjimenezshaw
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Do you know who suggested referencing cdn.proj.org?
btw, "The grid file is available in GTG format from https://cdn.proj.org/us_nga_egm08_1.tif/" ... that file does not exist, and it would be huge.
(in case anybody needs that data, there is a backup in https://github.com/jjimenezshaw/EGM2008_data and a link to read it with python)

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rouault commented Jul 5, 2025

Do you know who suggested referencing cdn.proj.org?

yeah I've some idea... I've already reached to IOGP about that (and the more mundane issue that the URL terminating with a slash are not valid)

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rouault commented Jul 5, 2025

extract of answer from IOGP: "For all 6 records, we will remove the remarks regarding availability from Proj. There are many grids available from Proj/GDAL and we mostly do not make reference to their availability." .

In any case, that's just comments, so the only bonus of the 12.014 is the updated accuracy for EGM08

@rouault rouault merged commit 36ff154 into OSGeo:master Jul 6, 2025
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