https://github.com/cran/nFactors
Tip revision: 592b098fc786911733da1c1953e58c9d1c2e9517 authored by Gilles Raiche on 10 April 2010, 00:00:00 UTC
version 2.3.3
version 2.3.3
Tip revision: 592b098
corFA.rd
\name{corFA}
\alias{corFA}
\title{ 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{
\item{R}{ numeric: correlation matrix.}
\item{method}{ character: actually only \code{"giv"} is supplied to compute the
approximation of the communalities by maximum correlation.}
}
\value{
\item{values}{ numeric: matrix of correlation/covariance with communalities
in the diagonal. }
}
\author{
Gilles Raiche \cr
Centre sur les Applications des Modeles de Reponses aux Items (CAMRI) \cr
Universite du Quebec a Montreal\cr
\email{raiche.gilles@uqam.ca}, \url{http://www.er.uqam.ca/nobel/r17165/}
}
\seealso{
\code{\link{plotuScree}},
\code{\link{nScree}},
\code{\link{plotnScree}},
\code{\link{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
}
\keyword{ manip }