Thanks Even. But that is not always:
echo 40 0 | PROJ_DEBUG=2 ./cs2cs etrs89 epsg:25830 pj_open_lib(proj.ini): call fopen(...proj.ini) - succeeded pj_open_lib(proj.db): call fopen(...proj.db) - succeeded 756099.65 4432069.06 0.00 And I understand (way) better the proj pipeline ;) On Wed, 4 Mar 2026 at 18:12, Even Rouault <[email protected]> wrote: > > Le 04/03/2026 à 18:09, Javier Jimenez Shaw via PROJ a écrit : > > Hi Antonio. > > On Tue, 3 Mar 2026 at 19:25, Antonio Valanzano via PROJ < > [email protected]> wrote: > >> I have used for the first time cs2cs and I have found not easy to >> discover which transformation the sw uses for the calculations. >> >> Here are my questions: >> >> 1. Is it possible for cs2cs to output not only the results but also >> the EPSG code of the transformation(s) used to produce the output ? >> This information could be useful for users in order to have more >> control over the transformations and avoid using the sw as a black >> box. >> > > There is projinfo https://proj.org/en/stable/apps/projinfo.html , that > can give you similar information. But it would be nice to have an option in > cs2cs that prints the last operation used calling > "proj_trans_get_last_used_operation". > That way the user can know "exactly" the operation performed. > > $ echo 49 15 | PROJ_NETWORK=ON PROJ_DEBUG=2 bin/cs2cs EPSG:4258 > EPSG:5514+8357 --3d > [...] > Using coordinate operation ETRS89 to S-JTSK / Krovak East North + Baltic > 1957 height > [...] > -717321.47 -1168433.34 -46.13 > > -- http://www.spatialys.com > My software is free, but my time generally not. > >
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