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#############################################################################
## Copyright (c) 2010-2022 Rune Haubo Bojesen Christensen
##
## This file is part of the ordinal package for R (*ordinal*)
##
## *ordinal* 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.
##
## *ordinal* 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.
##
## A copy of the GNU General Public License is available at
## <https://www.r-project.org/Licenses/> and/or
## <http://www.gnu.org/licenses/>.
#############################################################################
## This file contains:
## Functions to compute starting values for clmm()s.
clmm.start <- function(frames, link, threshold) {
## get starting values from clm:
fit <- with(frames,
clm.fit(y=y, X=X, weights=wts, offset=off, link=link,
threshold=threshold))
## initialize variance parameters to zero:
start <- c(fit$par, rep(0, length(frames$grList)))
return(start)
}
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