Nothing
# /usr/bin/r
#
# Copyright 2015-2015 Steven E. Pav. All Rights Reserved.
# Author: Steven E. Pav
#
# This file is part of madness.
#
# madness is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# madness is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with madness. If not, see <http://www.gnu.org/licenses/>.
#
# Created: 2015.11.18
# Copyright: Steven E. Pav, 2015
# Author: Steven E. Pav <shabbychef@gmail.com>
# Comments: Steven E. Pav
#' @include AllClass.r
#' @include utils.r
NULL
#' Matrix Trace
#'
#' @include AllClass.r
#' @param x \code{madness} object.
#' @exportMethod matrix.trace
#' @name matrix.trace
#' @template etc
setGeneric('matrix.trace', function(x) standardGeneric('matrix.trace'))
# det#FOLDUP
## ' @rdname matrix.trace
## ' @aliases matrix.trace,matrix-method
#setMethod("matrix.trace", signature(x="matrix"),function(x) { sum(diag(x)) })
#' @rdname matrix.trace
#' @aliases matrix.trace,ANY-method
setMethod("matrix.trace", signature(x="ANY"),
function(x) { sum(diag(x)) })
#' @rdname matrix.trace
#' @aliases matrix.trace,madness-method
setMethod("matrix.trace", signature(x="madness"),
function(x) {
xtag <- x@xtag
val <- x@val
takeus <- row(val) == col(val)
val <- array(sum(val[takeus]),dim=c(1,1))
dvdx <- matrix(colSums(x@dvdx[which(takeus),,drop=FALSE]),nrow=1)
vtag <- paste0('matrix.trace(',x@vtag,')')
varx <- x@varx
new("madness", val=val, dvdx=dvdx, vtag=vtag, xtag=xtag, varx=varx)
})
#UNFOLD
#for vim modeline: (do not edit)
# vim:fdm=marker:fmr=FOLDUP,UNFOLD:cms=#%s:syn=r:ft=r
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