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# $Id$
# Copyright (C) 2010-2013 Johannes Ranke
# Contact: mkin-devel@lists.berlios.de
# This file is part of the R package mkin
# mkin 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 3 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
# this program. If not, see <http://www.gnu.org/licenses/>
if(getRversion() >= '2.15.1') utils::globalVariables(c("name", "value"))
mkin_wide_to_long <- function(wide_data, time = "t")
{
colnames <- names(wide_data)
if (!(time %in% colnames)) stop("The data in wide format have to contain a variable named ", time, ".")
vars <- subset(colnames, colnames != time)
n <- length(colnames) - 1
long_data <- data.frame(
name = rep(vars, each = length(wide_data[[time]])),
time = as.numeric(rep(wide_data[[time]], n)),
value = as.numeric(unlist(wide_data[vars])),
row.names = NULL)
return(long_data)
}
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