https://github.com/cran/robCompositions
Tip revision: a4d717b5864005b0632730e50c7ff6f6b79fa30b authored by Matthias Templ on 06 March 2009, 17:46:31 UTC
version 1.2
version 1.2
Tip revision: a4d717b
ilr.R
`ilr` <-
function(x){
x.ilr=matrix(NA,nrow=nrow(x),ncol=ncol(x)-1)
D=ncol(x)
for (i in 1:ncol(x.ilr)){
x.ilr[,i]=sqrt((D-i)/(D-i+1))*log(((apply(as.matrix(x[,(i+1):D,drop=FALSE]),1,prod))^(1/(D-i)))/(x[,i]))
}
invisible(x.ilr)
}