From j1 at jimenezshaw.com  Sat Jul 12 04:15:41 2025
From: j1 at jimenezshaw.com (Javier Jimenez Shaw)
Date: Sat, 12 Jul 2025 13:15:41 +0200
Subject: [PROJ] Helmert calculator
Message-ID: <CADRrdKsNW_JjAHVoLqZOS-+CG6S19W1ci_2xsF_PMao6zpzQyg@mail.gmail.com>

Hi

In case anybody needs it, I have made this python program to compute the
Helmert transformation given two sets of points in lat,lon,alt.

https://github.com/jjimenezshaw/helmert-calc

Such feature was suggested by Niklas to locate old data/maps in modern
systems, with coordinates in an "unknown" reference. That is what happens
with old/historical data ;)

Cheers,
Javier

PS of course it uses pyproj.
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