randtest.coinertia {ade4} | R Documentation

## Monte-Carlo test on a coinertia analysis (in C).

### Description

Performs a Monte-Carlo test on a coinertia analysis.

### Usage

    randtest.coinertia(xtest, nrepet = 999, fixed=0, ...)

### Arguments

`xtest` | an object of class `coinertia`
`nrepet` | the number of permutations
`fixed` | when non uniform row weights are used in the coinertia analysis, this parameter must be the number of the table that should be kept fixed in the permutations
`...` | further arguments passed to or from other methods

### Value

a list of the class `randtest`

### References

Doledec, S. and Chessel, D. (1994) Co-inertia analysis: an alternative method for studying species-environment relationships. Freshwater Biology, 31, 277–294.

### Examples

    data(doubs)
    dudi1 <- dudi.pca(doubs$mil, scale = TRUE, scan = FALSE, nf = 3)
    dudi2 <- dudi.pca(doubs$poi, scale = FALSE, scan = FALSE, nf = 2)
    coin1 <- coinertia(dudi1,dudi2, scan = FALSE, nf = 2)
    plot(randtest(coin1))

[Package Contents]