dimRed (version 0.2.5)

getRotationMatrix: getRotationMatrix

Description

Extract the rotation matrix from dimRedResult objects derived from PCA and FastICA

Usage

getRotationMatrix(x)

Value

a matrix

Arguments

x

of type dimRedResult

Details

The data has to be pre-processed the same way as the method does, e.g. centering and/or scaling.

Examples

dat <- loadDataSet("Iris")

pca <- embed(dat, "PCA")
ica <- embed(dat, "FastICA")

rot_pca <- getRotationMatrix(pca)
rot_ica <- getRotationMatrix(ica)

scale(getData(dat), TRUE, FALSE) %*% rot_pca - getData(getDimRedData(pca))
scale(getData(dat), TRUE, FALSE) %*% rot_ica - getData(getDimRedData(ica))