toms571_test, a FORTRAN77 code which calls toms571(), which implements ACM toms algorithm 571, containing routines to determine the concentration parameter from the average modulus of a set of sample vectors, and vice versa, for both the von Mises (circular) and Fisher (spherical) distributions of directions.
The computer code and data files described and made available on this web page are distributed under the MIT license
toms571, a FORTRAN77 code which implements ACM toms algorithm 571, containing routines to determine the concentration parameter from the average modulus of a set of sample vectors, and vice versa, for both the von Mises (circular) and Fisher (spherical) distributions of directions.