coinertiaI {cocorresp} | R Documentation |
Performs a co-inertia of the triplets (Q_1,K_1,R_0) and (Q_2,K_2,R_0) with identity matrices K_1, K_2, R_0.
coinertiaI(X, Y, fast = TRUE)
X |
Species matrix X. |
Y |
Species Matrix Y. |
fast |
If |
Argument fast
is used to return only the row scores of
Y
in function permutest.coca
, which speeds the
permutation test considerably.
If fast = TRUE
, a matrix of row scores for matrix
Y
(see scores
below). If
fast = FALSE
a list with the following components:
weights |
A list with components |
scores |
A list with components |
lambda |
the Eigenvalues of the analysis (the square of the singular values from the SVD. |
call |
the matched function call. |
This function is not meant to be called directly by the user. If
you wish to use it study the code in
permutest.coca
to see how it should be called.
Original Matlab code by C.J.F. ter Braak and A.P. Schaffers. R port by Gavin L. Simpson.
Doledec, S and Chessel, D. (1994) Co-inertia analysis: a method for studying species-environment relationships. Freshwater Biology 31, 277–294.