[PROJ] Determine "cut line" for arbitrary projection

[Javier Jimenez Shaw]

If you mean in a generic way, I think the answer is no.
Each projection has its own peculiarities and behaviours. Spilhaus (by the
way, not yet in PROJ, but coming in 9.6.0) is a good example.

"... latitude (or projected x coordinate) " Do you mean longitude? See that
the longitude you are looking for may depend on the latitude.


On Sat, 8 Mar 2025 at 07:30, Nyall Dawson via PROJ <proj at lists.osgeo.org>
wrote:

> Hi list,
>
> A question: given an arbitrary projection/CRS, is it possible to determine
> the latitude (or projected x coordinate) at which features would need to be
> "cut" in order to avoid artifacts when those features wrap around the
> projection extremes.
>
> Eg if it was EPSG:4326, we'd need to cut the features at +/- 180. But if
> it's another projection... say mercator or spilhaus or ... is there any way
> to reliably determine this cutting line?
>
> Nyall
>
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