#
# 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/>.
`write.xts` <-
function(x) {
NC <- NCOL(x)
NR <- NROW(x)
DAT <- c(NC,NR)
x <- c(.index(x), as.numeric(x))
offset <- 0
for(i in 1:(NC+1)) {
end <- seq(i+offset*NR, length.out=NR)-offset
DAT <- c(DAT, c(x[end[1]], diff(x[end])))
offset <- offset + 1
}
DAT
}
`read.xts` <-
function(x) {
NC <- x[1]
NR <- x[2]
x <- x[-c(1:2)]
.xts(apply(matrix(x[-(1:NR)], ncol=NC),2,cumsum), cumsum(x[1:NR]))
}
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