Construct a projector instance

A projector maps a matrix from an N-dimensional space to d-dimensional space, where d may be less than N. The projection matrix, v, is not necessarily orthogonal. This function constructs a projector instance which can be used for various dimensionality reduction techniques like PCA, LDA, etc.

Usage

projector(v, preproc = prep(pass()), ..., classes = NULL)

Arguments

v

A matrix of coefficients with dimensions nrow(v) by ncol(v) (number of columns = number of components)

preproc

A prepped pre-processing object. Default is the no-processing pass() preprocessor.

...

Extra arguments to be stored in the projector object.

classes

Additional class information used for creating subtypes of projector. Default is NULL.

Value

An instance of type projector.

Examples

X <- matrix(rnorm(10*10), 10, 10)
svdfit <- svd(X)
p <- projector(svdfit$v)
proj <- project(p, X)