[PROJ] World UTM in a proper datum

[Noel Zinn (cc)]

Unlike an empirically-derived datum transformation (e.g. WGS <> ITRF), which can have different levels of "accuracy" depending how it was derived, a map projection (lat/lon <> N/E) is defined mathematically and is precise, i.e. without error.  Having said that, there are better and worse algorithms for UTM, but that's not the question you're asking.  In a datum transformation sense UTM will always be as (and only as) "accurate" as the geographicals you convert to N/E.  So, use EPSG:326XX and EPSG327XX, but plug in your precise geographicals.  


From: Javier Jimenez Shaw 
Sent: Saturday, April 17, 2021 2:44 PM
To: proj 
Subject: [PROJ] World UTM in a proper datum

Hi 

Maybe there is a better place to talk about this, but I do not know which one. I hope somebody from EPSG is reading this, and may give me a clue.

We have talked many times about the lack of accuracy of WGS84 (EPSG:4326), the datum ensemble, etc.
The problem is that I miss an accurate equivalent of the projected family "WGS84 / UTM zone XXY"(EPSG:326XX and EPSG327XX) for XX between 1 and 60 and Y is N or S. It would be nice something similar (a worldwide projected CRSs on UTM), but over a proper accurate and well defined geographic CRS (ITRF2014, WGS84(G1762), etc).

Do you know if there is any plan? Or do they exist and I was not able to find them?

Thanks.

.___ ._ ..._ .. . ._.  .___ .. __ . _. . __..  ... .... ._ .__
Entre dos pensamientos racionales 
hay infinitos pensamientos irracionales.




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