Geodetic UTM/GRS80 projection
Modified version of the original UTM/WGS84 projection from https://github.com/Turbo87/utm
Because there was only a rough UTM projection formula in use, there was a need to further expand the power series for geodetic precision (like this is realized with pyproj or GeographicLib). Formulas are cross-checked and based on geodetic literature.
Modifications
- Expanded power series from meter to sub-millimeter precise projection
- Projection onto GRS80 ellipsoid, as this is the basis for ETRS89 coordinates
- Cythonization for performance
- Extended testing, invoked by setup.py test
- Some minor bugfixes