[PROJ] Datum Grids, Which Ones?

[Paul Ramsey]

The list of datum grids on the web side is not 100% clear on what grids a person should pull for what purpose…
There’s regional files (europe and na and oceania) there’s a “world” file which, by size, perhaps includes all of the above? and there’s the un-specialized file, proj-datumgrid that is… everything not in the other files? something else?


• 2018-09-15 proj-datumgrid-1.8.zip

• 2019-09-01 proj-datumgrid-europe-1.4.zip

• 2019-03-01 proj-datumgrid-north-america-1.2.zip

• 2018-03-01 proj-datumgrid-oceania-1.0.zip

• 2019-03-01 proj-datumgrid-world-1.0.zip

If the best practice is just “download’em’all if you have the space”, then an “all” might be good, instead of “world”. And some note on what proj-datumgrid-1.8.zip actually is? Is it for Proj < 6 only?

P