corFA {nFactors}

Insert Communalities in the Diagonal of a Correlation or a Covariance Matrix

Description

This function inserts communalities in the diagonal of a correlation/covariance matrix.

Usage

corFA(R, method = "ginv")

Arguments

R

An integer matrix or a data.frame of correlations

method

A character vector: inversion method

Value

A correlation matrix with coerced variables with communalities in the diagonal.

Author(s)

Gilles Raiche, Universite du Quebec a Montreal ([e-mail])

See Also

plotuScree, nScree, plotnScree, plotParallel

Examples

## LOWER CORRELATION MATRIX WITH ZEROS ON UPPER PART
## From Gorsuch (table 1.3.1)
 gorsuch <- c(
 1,0,0,0,0,0,0,0,0,0,
 .6283, 1,0,0,0,0,0,0,0,0,
 .5631, .7353, 1,0,0,0,0,0,0,0,
 .8689, .7055, .8444, 1,0,0,0,0,0,0,
 .9030, .8626, .6890, .8874, 1,0,0,0,0,0,
 .6908, .9028, .9155, .8841, .8816, 1,0,0,0,0,
 .8633, .7495, .7378, .9164, .9109, .8572, 1,0,0,0,
 .7694, .7902, .7872, .8857, .8835, .8884, .7872, 1,0,0,
 .8945, .7929, .7656, .9494, .9546, .8942, .9434, .9000, 1,0,
 .5615, .6850, .8153, .7004, .6583, .7720, .6201, .6141, .6378, 1)

## UPPER CORRELATION MATRIX FILLED WITH UPPER CORRELATION MATRIX
 gorsuch <- makeCor(gorsuch)

## REPLACE DIAGONAL WITH COMMUNALITIES
 gorsuchCfa <- corFA(gorsuch)
 gorsuchCfa