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# file NominalLogisticBiplot/R/NominalMatrix2Binary.R
# copyright (C) 2012-2013 J.C. Hernandez and J.L. Vicente-Villardon
#
# 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/
#
#This function transfomates a matrix with nominal variables into a matrix
# with so many colums as the sum for all the level categories of the whole
# variable data set and each row of the matrix has so many one values
# as number of variables, situated in the level categories it presents.
#----------------------Parameters--------------
#Y: A matrix with nominal variables measured for a set of individuals.
NominalMatrix2Binary <- function(Y){
n=dim(Y)[1]
p=dim(Y)[2]
G= Nominal2Binary(Y[,1])
for (j in 2:p)
G=cbind(G, Nominal2Binary(Y[,j]))
return(G)
}
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