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# Rmetrics is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# Rmetrics 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 Library General Public License for more details.
#
# You should have received a copy of the GNU Library General
# Public License along with this library; if not, write to the
# Free Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
################################################################################
test.lag <-
function()
{
# RUnit Test:
tS = round(dummyMonthlySeries(flormat = "counts"), 3)[, 1]
tS
lag(tS)
lag(tS, k = -2:2)
lag(tS, k = -2:2, trim = TRUE)
tS = round(dummyMonthlySeries(), 3)[, 1]
tS
lag(tS)
lag(tS, k = -2:2)
lag(tS, k = -2:2, trim = TRUE)
# check colnames when using multiple lag indexes.
data <- matrix(runif(12), ncol = 2)
charvec <- rev(paste("2009-0", 1:6, "-01", sep = ""))
S <- timeSeries(data, charvec)
colnames(S) <- paste("S", 1:2, sep = ".")
ts <- lag(S, -1:1)
checkIdentical(colnames(ts), c("S.1[-1]", "S.1[0]", "S.1[1]", "S.2[-1]",
"S.2[0]", "S.2[1]"))
}
################################################################################
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