procuste.randtest {ade4}R Documentation

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

Author(s)

Jean Thioulouse ade4-jt@biomserv.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$mil, scal = TRUE, scann = FALSE)
pca2 <- dudi.pca(doubs$poi, scal = FALSE, scann = FALSE)
protest1 <- procuste.randtest(pca1$tab, pca2$tab, 999)
protest1
plot(protest1,main="PROTEST")

[Package ade4 version 1.4-0 Index]