Inverse regression term matrix

Description

dr.x returns the matrix of data constructed from the formula for a dimension reduction regression. dr.y returns the response.

Usage

dr.x(object)
dr.y(object)
dr.z(x,weights=NULL,center=TRUE,rotate=TRUE,decomp="svd")

Arguments

object An dimension reduction regression object
x a matrix to be centered and scaled OR a dimension reduction object from which the model matrix will be extracted
weights a vector of weights, or NULL if unweighted
center if TRUE, center the output
rotate if TRUE, multiply by the inverse square root of the sample covariance matrix.
decomp Decomposition to be used in computing the rotation; the default is "svd".

Value

dr.x returns an n by p matrix of terms, excluding the intercept, constructed from the dimension reduction regression object. dr.y returns the response. dr.z returns a possibly centered and scaled version of x.

Author(s)

Sanford Weisberg, <sandy@stat.umn.edu>

See Also

dr

Examples

data(ais)
attach(ais)
m1 <- dr(LBM~Ht+Wt+RCC+WCC)
dr.x(m1)
dr.y(m1)

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