Last one for a while, I think. I wish you all a very peaceful
Christmas and New Year, and let's hope 2015 brings some more
positive energy to the world.
1. D bindings/wrappers for the swiss ephemeris
"The SWISS EPHEMERIS is the high precision ephemeris developed by
Astrodienst, largely based upon the DExxx ephemerides from NASA's
JPL . The original release in 1997 was based on the DE405/406
ephemeris. Since release 2.00 in February 2014, it is based on
the DE431 ephemeris released by JPL in September 2013".
NB - Swiss Ephemeris is not free for commercial use.
2. D port of simple Nelder-Mead simplex minimisation (written by
Michael F. Hutt in original C version) here. With constraints.
"The Nelder–Mead method or downhill simplex method or amoeba
method is a commonly used nonlinear optimization technique, which
is a well-defined numerical method for problems for which
derivatives may not be known. However, the Nelder–Mead technique
is a heuristic search method that can converge to non-stationary
points on problems that can be solved by alternative methods".