Description Usage Arguments Details Value Author(s) Examples
View source: R/largest.kappas.R
Function largest.kappas
calculates the condition numbers for all subcompositions of a given size, for a particular compositional data set.
1 | largest.kappas(Xcom, nparts = 3, sizetoplist = 10)
|
Xcom |
A data matrix with compositions in rows |
nparts |
The number of parts for the subcompositions to be analysed. |
sizetoplist |
The length of the list of the "best" subcompositions |
Log-ratio PCA is executed for each subcompostion, and the resulting eigenvalues and eigenvectors are stored.
A data frame with an ordered list of subcompositions
Jan Graffelman (jan.graffelman@upc.edu)
1 2 3 | X <- matrix(runif(600),ncol=6)
Xcom <- X/rowSums(X)
Results <- largest.kappas(Xcom)
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