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# Copyright (C) 2006, 2010, 2012, 2013 Heather Turner
#
# 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 or 3 of the License
# (at your option).
#
# 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.
#
# A copy of the GNU General Public License is available at
# http://www.r-project.org/Licenses/
pickCoef <- function(object, pattern = NULL, value = FALSE, ...){
coefs <- names(coef(object))
if (is.null(coefs))
stop("Coefficient names cannot be extracted from 'object'")
if (is.null(pattern)) {
default <- list(setlabels = "Selected coefficients",
title = "Select coefficients of interest",
items.label = "Model coefficients:",
return.indices = TRUE, edit.setlabels = FALSE,
warningText = "No subset of coefficients selected")
dots <- list(...)
dotArgs <- match(names(default), names(dots))
allArgs <- c(list(coefs), dots, default[is.na(dotArgs)])
selection <- unname(unlist(do.call(pickFrom, allArgs)))
}
else {
selection <- grep(pattern, coefs, value = FALSE, ...)
}
if (!length(selection))
selection <- NULL
else if (!value)
names(selection) <- coefs[selection]
else
selection <- parameters(object)[selection]
selection
}
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