R: Estimability Check

estmb {sasLM}

R Documentation

Estimability Check

Description

Check the estimability of row vectors of coefficients.

Usage

  estmb(L, X, g2, eps=1e-8)

Arguments

`L`	row vectors of coefficients
`X`	a model (design) matrix from `ModelMatrix`
`g2`	g2 generalized inverse of `crossprod(X)`
`eps`	absolute value less than this is considered to be zero.

Details

It checks the estimability of L, row vectors of coefficients. This corresponds to SAS PROC GLM ESTIMATE. See <Kennedy Jr. WJ, Gentle JE. Statistical Computing. 1980> p361 or <Golub GH, Styan GP. Numerical Computations for Univariate Linear Models. 1971>.

Value

a vector of logical values indicating which row is estimable (as TRUE)

Author(s)

Kyun-Seop Bae k@acr.kr