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#
# fields is a package for analysis of spatial data written for
# the R software environment.
# Copyright (C) 2022 Colorado School of Mines
# 1500 Illinois St., Golden, CO 80401
# Contact: Douglas Nychka, douglasnychka@gmail.edu,
#
# This program 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 2 of the License, or
# (at your option) any later version.
# This program 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 the R software environment if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# or see http://www.r-project.org/Licenses/GPL-2
##END HEADER
profileMLE<- function (obj, parName, parGrid=NULL, gridN=15,
cov.params.start=NULL, GCV=FALSE, REML=FALSE,
verbose=FALSE ){
if( class(obj)[1]!= "spatialProcess"){
stop("only implemented tfor spatialProcess objects")
}
if( obj$CASE==0){
stop("object needs to be have MLE parameters")
}
if(is.null(parGrid) ){
parGrid<- data.frame(obj$summary[parName] *
seq( .5,2,length.out=gridN)
)
names(parGrid)<- parName
}
# remove profile parameter as having a starting value
if( is.null(cov.params.start)){
cov.params.startTmp<- as.list(obj$MLEInfo$pars.MLE)
#cov.params.startTmp<- obj$cov.params.start
cov.params.startTmp[parName]<- NULL
}
else{
cov.params.startTmp<-cov.params.start
}
# just evaluate other parameters at MLEs and don't optimze.
# E.g. just use MLE lambda hat for all choice in in parGrid.
# if( fast){
# cov.params.startTmp<-NULL
#
# }
# cov.argsTemp<- obj$cov.argsFull
# cov.argsTemp[parName]<- NULL
profileInfo<- mKrigMLEGrid(obj$x, obj$y,
weights = obj$weights,
Z = obj$Z,
mKrig.args = obj$mKrig.args,
cov.function = obj$cov.function,
cov.args = obj$cov.args,
par.grid = parGrid,
na.rm = TRUE,
verbose = verbose,
REML = REML,
GCV = GCV,
cov.params.start = cov.params.startTmp)
return( profileInfo)
}
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