geographiclib / geographiclib-fortran

Fortran implementation of geodesic routines

MIT License

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Fortran implementation of the geodesic routines in GeographicLib

This is a library to solve geodesic problems on an ellipsoid model of the earth.

The two tools ngsforward and ngsinverse are replacements for the tools FORWARD and INVERSE available from the NGS

Licensed under the MIT/X11 License; see LICENSE.txt.

The algorithms are documented in

C. F. F. Karney, Algorithms for geodesics, J. Geodesy 87(1), 43–55 (2013); Addenda.

Other links:

Library documentation: https://geographiclib.sourceforge.io/Fortran/doc
Change log: https://geographiclib.sourceforge.io/Fortran/doc/changes.html
GIT repository: https://github.com/geographiclib/geographiclib-fortran Releases are tagged in git as, e.g., v1.52, v2.0, etc.
Source distribution: https://sourceforge.net/projects/geographiclib/files/distrib-Fortran
GeographicLib: https://geographiclib.sourceforge.io
Author: Charles Karney, charles@karney.com