AOP                     Function to Average Orthogonal Projection
                        Matrices
B2P                     Function to Compute an Orthogonal Projection
                        Matrix Based on an Arbitrary Matrix
LDRTools-package        Tools for Linear Dimension Reduction
O2P                     Function to Compute an Orthogonal Projection
                        Matrix Based on a Matrix with Orthonormal
                        Columns
Pdist                   Function to Compute the Distances Between
                        Orthogonal Projection Matrices
