randtest.pcaiv {ade4} | R Documentation |
Monte-Carlo Test on the percentage of explained (i.e. constrained) inertia
Description
Performs a Monte-Carlo test on on the percentage of explained (i.e. constrained) inertia. The statistic is the ratio of the inertia (sum of eigenvalues) of the constrained analysis divided by the inertia of the unconstrained analysis.
Usage
## S3 method for class 'pcaiv'
randtest(xtest, nrepet = 99, ...)
## S3 method for class 'pcaivortho'
randtest(xtest, nrepet = 99, ...)
Arguments
xtest |
an object of class |
nrepet |
the number of permutations |
... |
further arguments passed to or from other methods |
Value
a list of the class randtest
Author(s)
Stéphane Dray stephane.dray@univ-lyon1.fr, original code by Raphaël Pélissier
Examples
data(rpjdl)
millog <- log(rpjdl$mil + 1)
coa1 <- dudi.coa(rpjdl$fau, scann = FALSE)
caiv1 <- pcaiv(coa1, millog, scan = FALSE)
randtest(caiv1)
[Package ade4 version 1.7-22 Index]