Check the estimability of row vectors of coefficients.
estmb(L, X, g2, eps=1e-8)row vectors of coefficients
a model (design) matrix from ModelMatrix
g2 generalized inverse of crossprod(X)
absolute value less than this is considered to be zero.
a vector of logical values indicating which row is estimable (as TRUE)
It checks 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>.