#
# xts: eXtensible time-series
#
# Copyright (C) 2008 Jeffrey A. Ryan jeff.a.ryan @ gmail.com
#
# Contributions from Joshua M. Ulrich
#
# 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 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/>.
# functions for its <--> xts conversions
`re.its` <-
function(x, ...) {
if(!require('its', quietly=TRUE))
its <- function(...) message("package 'fts' is required")
xx <- coredata(x)
dates <- index(x)
its(xx,dates=dates,...)
}
`as.xts.its` <-
function(x,..., .RECLASS=FALSE) {
if(.RECLASS) {
xx <- xts(x@.Data,
order.by=x@dates,
.CLASS='its',
...)
} else {
xx <- xts(x@.Data,
order.by=x@dates,
...)
}
xx
}
`xts.as.its` <-
function(x,...) {
if(!is.xts(x)) stop('not an "xts" object')
if(!inherits(class(index(x)),'POSIXct')) indexClass(x) <- "POSIXct"
re.its(x,...)
}
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