This works for me. See that cct needs 3 coordinates. x,y,z
$ echo 59770.038 101069.654 0 | cct +proj=helmert +x=334491.216
+y=6950332.853 +theta=-49800
368362.0519 7062761.93680. inf
On Wed, 21 May 2025 at 00:36, Daniel Farfán via PROJ
wrote:
> I've been trying to solve
I've been trying to solve this problem but was unable to, so I kindly
ask for help.
I have 3 coordinate points in a local grid:
A': 59770.038, 101069.654
B': 59214.93435, 98996.58573
C': 58444.7795, 99231.37298
Corresponding coordinate points in EPSG:32719 CRS:
A: 368362.117, 7062761.917
B: 36831
