An R Interface to the 'ROPTLIB' Library for Riemannian Manifold
Optimization
An R interface to version 0.3 of the 'ROPTLIB' optimization library
(see < http://www.math.fsu.edu/~whuang2> for more information). Optimize real-
valued functions over manifolds such as Stiefel, Grassmann, and Symmetric
Positive Definite matrices.