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# copyright (C) 1994-2013 Bill Venables and Brian Ripley
#
# 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/
#
class.ind <- function(cl)
{
n <- length(cl)
cl <- as.factor(cl)
x <- matrix(0, n, length(levels(cl)) )
x[(1L:n) + n*(unclass(cl)-1L)] <- 1
dimnames(x) <- list(names(cl), levels(cl))
x
}
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