Month: June 2014

Cartesian to Geodetic

For many years, I have used the closed-form solution from Heikkinen [1] for converting Cartesian coordinates to geodetic latitude and altitude.  I’ve never actually seen the original reference (which is in German).  I coded up the algorithm from the table given

Posted in Algorithms, Programming Tagged with: ,

JSON + Fortran

Introducing json-fortran, an easy-to-use JSON API written in modern Fortran.  As far as I know, it’s currently the only publically-available production-ready JSON API for Fortran that does not involve an interface to C libraries.  The code is hosted at GitHub, and is released under

Posted in Programming Tagged with: , ,

Hello World

Posted in Programming Tagged with: