Called by various functions to calculate Pearson or angular correlation matrices.
cor2(x, y = NULL, circ = FALSE)a matrix.
an optional second matrix.
If TRUE, the observations are assumed to be angular (in radians), and circular correlation is used. If FALSE, Pearson product moment correlations is returned.
A correlation matrix is returned.
An auxilliary function to ease the maintenance.
Jammalamadaka, S. Rao and SenGupta, A. (2001). Topics in Circular Statistics, Section 8.2, World Scientific Press, Singapore.