Promax oblique rotation (Hendrickson & White 1964) of orthogonally (varimax) rotated loadings: target = sign(Λ)|Λ|^power, Procrustes fit, normalized to unit-variance factors. Returns the pattern loadings and the factor correlation matrix.
Optional
Promax oblique rotation (Hendrickson & White 1964) of orthogonally (varimax) rotated loadings: target = sign(Λ)|Λ|^power, Procrustes fit, normalized to unit-variance factors. Returns the pattern loadings and the factor correlation matrix.