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# $Id: parm.R 243 2008-07-22 16:33:38Z thothorn $
parm <- function(coef, vcov, df = 0) {
if (length(coef) != nrow(vcov) ||
length(coef) != ncol(vcov))
stop("dimensions don't match")
if (is.null(names(coef)))
names(coef) <- paste("V", 1:length(coef), sep = "")
if (is.null(colnames(vcov)))
colnames(vcov) <- names(coef)
if (is.null(rownames(vcov)))
rownames(vcov) <- names(coef)
if (!is.numeric(coef) || !is.vector(coef))
stop(sQuote("coef"), " is not a numeric vector")
if (!is.numeric(vcov) || !is.matrix(vcov))
stop(sQuote("vcov"), " is not a numeric matrix")
if (!isSymmetric(vcov, tol = sqrt(.Machine$double.eps)))
stop(sQuote("vcov"), " is not a symmetric matrix")
ret <- list(coef = coef, vcov = vcov, df = df)
class(ret) <- "parm"
ret
}
coef.parm <- function(object, ...)
object$coef
vcov.parm <- function(object, ...)
object$vcov
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