R: Multiple CO-inertia Analysis

mcoa {ade4}

R Documentation

Multiple CO-inertia Analysis

Description

performs a multiple CO-inertia analysis, using an object of class ktab.

Usage

mcoa(X, option = c("inertia", "lambda1", "uniform", "internal"), 
    scannf = TRUE, nf = 3, tol = 1e-07)
## S3 method for class 'mcoa'
print(x, ...)
## S3 method for class 'mcoa'
summary(object, ...)
## S3 method for class 'mcoa'
plot(x, xax = 1, yax = 2, eig.bottom = TRUE, ...)

Arguments

`X`	an object of class `ktab`
`option`	a string of characters for the weightings of the arrays options : "inertia" weighting of group k by the inverse of the total inertia of the array k "lambda1" weighting of group k by the inverse of the first eigenvalue of the k analysis "uniform" uniform weighting of groups "internal" weighting included in `X$tabw`
`scannf`	a logical value indicating whether the eigenvalues bar plot should be displayed
`nf`	if scannf FALSE, an integer indicating the number of kept axes
`tol`	a tolerance threshold, an eigenvalue is considered positive if it is larger than `-tol*lambda1` where `lambda1` is the largest eigenvalue.
`x, object`	an object of class 'mcoa'
`...`	further arguments passed to or from other methods
`xax, yax`	the numbers of the x-axis and the y-axis
`eig.bottom`	a logical value indicating whether the eigenvalues bar plot should be added

Value

mcoa returns a list of class 'mcoa' containing :

`pseudoeig`	a numeric vector with the all pseudo eigenvalues
`call`	the call-up order
`nf`	a numeric value indicating the number of kept axes
`SynVar`	a data frame with the synthetic scores
`axis`	a data frame with the co-inertia axes
`Tli`	a data frame with the co-inertia coordinates
`Tl1`	a data frame with the co-inertia normed scores
`Tax`	a data frame with the inertia axes onto co-inertia axis
`Tco`	a data frame with the column coordinates onto synthetic scores
`TL`	a data frame with the factors for Tli Tl1
`TC`	a data frame with the factors for Tco
`T4`	a data frame with the factors for Tax
`lambda`	a data frame with the all eigenvalues (computed on the separate analyses)
`cov2`	a numeric vector with the all pseudo eigenvalues (synthetic analysis)

Author(s)

Daniel Chessel
Anne B Dufour anne-beatrice.dufour@univ-lyon1.fr

References

Chessel, D. and Hanafi, M. (1996) Analyses de la co-inertie de K nuages de points, Revue de Statistique Appliquée, 44, 35–60.

Examples

data(friday87)
w1 <- data.frame(scale(friday87$fau, scal = FALSE))
w2 <- ktab.data.frame(w1, friday87$fau.blo, tabnames = friday87$tab.names)
mcoa1 <- mcoa(w2, "lambda1", scan = FALSE)
mcoa1
summary(mcoa1)
plot(mcoa1)

[Package ade4 version 1.7-4 Index]