#' opt.outputMeanVolWts
#'
#' %% ~~ A concise (1-5 lines) description of what the function does. ~~
#'
#' %% ~~ If necessary, more details than the description above ~~
#'
#' @param opt %% ~~Describe \code{opt} here~~
#' @param returns %% ~~Describe \code{returns} here~~
#' @param digits %% ~~Describe \code{digits} here~~
#' @param names %% ~~Describe \code{names} here~~
#' @return %% ~Describe the value returned %% If it is a LIST, use %%
#' @note %% ~~further notes~~
#' @author %% ~~who you are~~
#' @seealso %% ~~objects to See Also as \code{\link{help}}, ~~~
#' @references %% ~put references to the literature/web site here ~
#' @keywords ~kwd1 ~kwd2
#' @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 (opt, returns, digits = NULL, names = NULL)
#' {
#' wts = opt$weights
#' sigmasq = as.numeric(t(wts) %*% var(returns) %*% wts)
#' sigma = sqrt(sigmasq)
#' mu.ret = apply(returns, 2, mean)
#' mu = as.numeric(t(wts) %*% mu.ret)
#' if (is.null(digits)) {
#' output = wts
#' }
#' else {
#' if (is.null(names)) {
#' output = list(wts = wts)
#' output = lapply(output, round, digits)
#' }
#' else {
#' output = list(wts = wts)
#' names(output) = names
#' output = lapply(output, round, digits)
#' }
#' }
#' output
#' }
#' @export
opt.outputMeanVolWts = function(opt,returns,digits = NULL,names = NULL)
{
wts = opt$weights
sigmasq = as.numeric(t(wts)%*%var(returns)%*%wts)
sigma = sqrt(sigmasq)
mu.ret = apply(returns,2,mean)
mu = as.numeric(t(wts)%*%mu.ret)
if(is.null(digits))
{output = wts} else
{if(is.null(names))
{output = list(wts=wts)
output = lapply(output,round,digits)}
else
{output = list(wts=wts)
names(output) = names
output = lapply(output,round,digits)}
}
output
}
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