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# This R package 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.
#
# This R package 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 R package; if not, write to the
# Free Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
################################################################################
# MEHODS: DESCRIPTION:
# window.timeDate Extracts a piece from a 'timeDate' object
# cut.timeDate Extracts a piece from a 'timeDate' object
################################################################################
# ---------------------------------------------------------------------------- #
# Roxygen Tags
#' @export
# ---------------------------------------------------------------------------- #
window.timeDate <-
function(x, start, end, ...)
{
# A function implemented by Diethelm Wuertz and Yohan Chalabi
# Descriptions:
# Subsets a timeDate object between from and to dates.
# Arguments
# x - an object of class "timeDate"
# start, end - start and end dates as "timeDate" objects.
# Note:
# This is synonome for the function window() which should
# be preferred.
# FUNCTION:
# Extract Subset:
ct <- as.POSIXct(x)
FROM = as.POSIXct(timeDate(start, zone = x@FinCenter, FinCenter = "GMT"))
TO = as.POSIXct(timeDate(end, zone = x@FinCenter, FinCenter = "GMT"))
test = (ct >= FROM & ct <= TO)
if (all(!test)) {
ans <- x
ans@Data <- as.POSIXct(NA)
} else {
ans <- x[test]
}
# Return Value:
ans
}
# ---------------------------------------------------------------------------- #
# Roxygen Tags
#' @export
# ---------------------------------------------------------------------------- #
cut.timeDate <-
function(x, from , to, ...)
{
# A function implemented by Diethelm Wuertz
# Descriptions:
# Subsets a timeDate object between from and to dates.
# Arguments
# x - an object of class "timeDate"
# from, to - start and end dates as "timeDate" objects.
# Note:
# This is synonome for the function window() which should
# be preferred.
# FUNCTION:
.Deprecated("window", "timeDate")
# Extract Subset:
X = timeDate(x, zone = x@FinCenter, FinCenter = "GMT")
FROM = timeDate(from, zone = x@FinCenter, FinCenter = "GMT")
TO = timeDate(to, zone = x@FinCenter, FinCenter = "GMT")
test = (X >= FROM & X <= TO)
ans = timeDate(X[test], zone = "GMT", FinCenter = x@FinCenter)
# Return Value:
ans
}
################################################################################
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