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#Copyright (c) 2009-2022 Sebastien Bihorel
#All rights reserved.
#
#This file is part of scaRabee.
#
# scaRabee is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# scaRabee 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with scaRabee. If not, see <http://www.gnu.org/licenses/>.
#
weighting <- function(parms=NULL,
derparms=NULL,
codevar=NULL,
y=NULL,
xdata=NULL,
check=FALSE){
# Input validation
if (check){
if (is.null(codevar))
stop('codevar argument is NULL.')
if (!is.character(codevar))
stop('codevar argument must be an object of class \'character\'')
if (length(codevar)>1)
stop('codevar argument must have a length of 1.')
}
# Evaluation of codevar
if (is.null(derparms)){
cparms <- as.list(parms)
} else {
cparms <- c(parms,derparms)
}
# Get dimension of xdata
ntime <- length(xdata)
v <- with(cparms,{
eval(parse(text=codevar))
return(v)
})
# Check dimension of v
if (check){
if (sum(size(v)==size(y))!=2)
stop(paste('the dimensions of the variance matrix should not differ from',
'the dimensions of\n the predictions matrix. Please, check',
'your code.'))
}
return(v)
}
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