procuste.rtest {ade4} | R Documentation |
Monte-Carlo Test on the sum of the singular values of a procustean rotation (in R).
Description
performs a Monte-Carlo Test on the sum of the singular values of a procustean rotation.
Usage
procuste.rtest(df1, df2, nrepet = 99, ...)
Arguments
df1 |
a data frame |
df2 |
a data frame |
nrepet |
the number of permutations |
... |
further arguments passed to or from other methods |
Value
returns a list of class rtest
Author(s)
Daniel Chessel
Anne-BĂ©atrice Dufour anne-beatrice.dufour@univ-lyon1.fr
References
Jackson, D.A. (1995) PROTEST: a PROcustean randomization TEST of community environment concordance. Ecosciences, 2, 297–303.
Examples
data(doubs)
pca1 <- dudi.pca(doubs$env, scal = TRUE, scann = FALSE)
pca2 <- dudi.pca(doubs$fish, scal = FALSE, scann = FALSE)
proc1 <- procuste(pca1$tab, pca2$tab)
protest1 <- procuste.rtest(pca1$tab, pca2$tab, 999)
protest1
plot(protest1)
[Package ade4 version 1.7-22 Index]