```
#
# 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 2 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/>.
split.xts <-
function(x, f="months", drop=FALSE, k=1, ...) {
if(is.character(f) && length(f) == 1L) {
ep <- endpoints(x, on=f, k=k)
sp <- (ep + 1)[-length(ep)]
ep <- ep[-1]
lapply(1:length(ep), function(X) x[sp[X]:ep[X]])
} else
NextMethod("split")
}
```

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