getAp: getAp
In kloke/rbgee: Rank-based GEE fits

Description Usage Arguments Author(s) References Examples

If the link is the identity, i.e., a linear model then the function aprime is the design matrix times beta. If another link is to be used hen this function needs to be changed.

1	getAp(xmat, center, beta, geemod = "LM")

`xmat`	Design matrix.
`center`	Center (block) indicator.
`beta`	Current value of beta
`geemod`	Currently only geemod="LM" functions.

Joseph W. McKean

Kloke and McKean (2014), Nonparametrics Using R, Boca Raton: Chapman-Hall.

##---- 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 (xmat, center, beta, geemod = "LM") 
{
    if (geemod == "LM") {
        apbeta <- xmat %*% beta
    }
    return(apbeta)
  }