[PROJ] accuracy or project conversion

[Even Rouault]

Hi,

look at the result of 
https://proj.org/en/9.3/search.html?q=accuracy&check_keywords=yes&area=default

However that will not help you for your need. The accuracy settings in 
the above functions is to have a "guaranteed" accuracy, but you the most 
precise coordinate operation in the candidates that match that accuracy. 
And this is mostly for transformations (datum shifts, etc.)

For your case where it is for a map projection, and for the very 
particular case of Transverse Mercator, you can use the +approx switch. 
Cf https://proj.org/en/9.3/operations/projections/utm.html . Can also be 
achieved with +algo=evenden_snyder mentioned just below.

Even

Le 27/11/2023 à 23:23, Hunter1972 via PROJ a écrit :
> Hello,
> Is it possible to specify accuracy of project conversion between different CRS?
> In particular I am interested in UTM <-> WGS84 conversion)routines to be much faster with lower accuracy (around 1m is enough).
>
> Ravil
>
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