ade4 (version 1.01)

procuste.randtest: Monte-Carlo Test on the sum of the singular values of a procustean rotation (in C).

Description

performs a Monte-Carlo Test on the sum of the singular values of a procustean rotation.

Usage

procuste.randtest(df1, df2, nrepet = 999)

Arguments

df1

a data frame

df2

a data frame

nrepet

the number of permutations

Value

• returns a list of class 'randtest'

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$mil, scal = TRUE, scann = FALSE)
pca2 <- dudi.pca(doubs$poi, scal = FALSE, scann = FALSE)
protest1 <- procuste.randtest(pca1$tab, pca2$tab, 999)
protest1
plot(protest1,main="PROTEST")