Geodesic routines implemented in Fortran

Author

Charles F. F. Karney (charl.nosp@m.es@k.nosp@m.arney.nosp@m..com)

Version

2.0

Date

2022-04-21

Abstract

This is a Fortran implementation of the geodesic algorithms from GeographicLib. This is a self-contained library which makes it easy to do geodesic computations for an ellipsoid of revolution in a Fortran program. It is written in Fortran 77 (avoiding features which are now deprecated) and should compile correctly with just about any Fortran compiler.

This an implementation in Fortran of the geodesic algorithms described in

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

Other links

• Library documentation (all versions): https://geographiclib.sourceforge.io/Fortran
• 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
• The library has been implemented in a few other languages.

Contents

• Introduction to the geodesic problem
• Use as a standalone library
• Library documentation
• Change log