components.ictest: Extract Components from 'ictest' and 'ladle' Objects

In ICtest: Estimating and Testing the Number of Interesting Components in Linear Dimension Reduction

Extract Components from 'ictest' and 'ladle' Objects

Description

Methods for the components generic from the ICS package to extract components from objects of class ictest and ladle. The user can choose whether all components are extracted or only those relevant under the null hypothesis.

Usage

## S3 method for class 'ictest'
components(x, which = "all", ...)
## S3 method for class 'ladle'
components(x, which = "all", ...)

Arguments

x	an object which has a components method, like for example an ictest object.
which	for an object of class ictest. If "all", then all components S in the ictest object are extracted. If "k", then only the first k components are extracted, where the value of k is taken from the ictest object. This is only meaningful if k was at least 1.
...	arguments passed on to other methods.

Value

a matrix with the components.

Author(s)

Klaus Nordhausen

Examples

n <- 200
X <- cbind(rnorm(n, sd = 2), rnorm(n, sd = 1.5), rnorm(n), rnorm(n), rnorm(n))

TestCov <- PCAasymp(X, k = 2)
head(components(TestCov))
head(components(TestCov, which = "k"))

ICtest documentation built on April 2, 2026, 9:06 a.m.