basis: Orthogonal basis for column space of a matrix

In gmonette/spida15: Collection of miscellaneous functions for mixed models etc. prepared for SPIDA 2009+ (development version)

Usage

basis(X, coef = FALSE)

Arguments

X
coef

Examples

##---- Should be DIRECTLY executable !! ----
##-- ==>  Define data, use random,
##--	or do  help(data=index)  for the standard data sets.

## The function is currently defined as
function (X, coef = FALSE) 
{
    q <- qr(X)
    sel <- q$pivot[seq_len(q$rank)]
    ret <- X[, sel]
    attr(ret, "cols") <- sel
    if (coef) 
        attr(ret, "R") <- qr.coef(qr(ret), mat)
    colnames(ret) <- colnames(X)[sel]
    ret
  }

gmonette/spida15 documentation built on May 17, 2019, 7:26 a.m.