#' summary \code{"pafm"} object.
#'
#' Generic function of summary method for \code{paFm}.
#'
#' @param object \code{"pafm"} object created by
#' \code{paFm}.
#' @param digits integer indicating the number of decimal places. Default is 3.
#' @param ... Other arguments for \code{print} methods.
#'
#' @author Yi-An Chen.
#'
#' @examples
#' # load data from the database
#' data(managers)
#' # fit the factor model with LS
#' fit.ts <- fitTsfm(asset.names=colnames(managers[,(1:6)]),
#' factor.names=c("EDHEC.LS.EQ","SP500.TR"),
#' data=managers)
#'
#' fm.attr <- paFm(fit.ts)
#' summary(fm.attr)
#'
#' @method summary pafm
#' @export
summary.pafm <- function(object, digits=max(3, .Options$digits - 3), ...) {
# n <- dim(fm.attr[[1]])[1]
# k <- dim(fm.attr[[1]])[2]+1
# table.mat <- matrix(rep(NA,n*k*2),ncol=n)
cat("\nMean of returns attributed to factors \n")
print(sapply(object[[3]], function(x) apply(x,2,mean)), digits=digits, ...)
cat("\nStandard Deviation of returns attributed to factors \n")
print(sapply(object[[3]], function(x) apply(x,2,sd)), digits=digits, ...)
}
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