varimax2: Varimax rotation

In bigutilsr: Utility Functions for Large-scale Data

Varimax rotation

Description

Varimax rotation

Usage

varimax2(X, normalize = FALSE, reorder = TRUE, rotmat = FALSE)

Arguments

X	A matrix with more rows than columns.
normalize	Whether to apply Kaiser normalization? See stats::varimax. Default is FALSE.
reorder	Whether to permute rotation vectors to maximize the conservation of the order of the initial columns of X. Default is TRUE.
rotmat	Whether to return the rotation matrix rot, or the rotated matrix X %*% rot (the default, FALSE).

Value

Either the rotation matrix rot, or the rotated matrix X %*% rot, depending on rotmat.

Examples

X <- as.matrix(iris[1:4])
X_rot <- varimax2(X)
X_rot2 <- varimax(X, normalize = FALSE)$loadings[]
all.equal(X_rot2, X_rot[, c(3, 2, 1, 4)], check.attributes = FALSE)
varimax2(X, rotmat = TRUE)

X2 <- prcomp(X)$x
X2_rot <- varimax2(X2)
X2_rot2 <- varimax(X2, normalize = FALSE)$loadings[]
all.equal(X2_rot, X2_rot2, check.attributes = FALSE)

bigutilsr documentation built on Aug. 8, 2025, 7:24 p.m.