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Truncate a genpca fit to fewer components

Source: R/gpca.R
truncate.genpca.Rd

Returns a new genpca object retaining only the first ncomp components. All component-indexed slots (v, s, sdev, ov, ou, u, propv, cumv) are sliced consistently; the preprocessing object and constraint matrices are carried over unchanged.

Usage

# S3 method for class 'genpca'
truncate(x, ncomp)

Arguments

x

A genpca object.

ncomp

Number of components to retain (a positive integer no larger than ncomp(x)).

Value

A genpca object with ncomp components.

See also

genpca(), reconstruct.genpca()

Examples

X <- matrix(rnorm(60), 15, 4)
fit <- genpca(X, ncomp = 4)
fit2 <- truncate(fit, 2)
multivarious::ncomp(fit2)
#> [1] 2