R/nperiods.R

In R-Finance/xts: eXtensible Time Series

#
#   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/>.


`nseconds` <-
function(x) {
  length(endpoints(x,on='seconds'))-1
}
`nminutes` <-
function(x) {
  length(endpoints(x,on='minutes'))-1
}
`nhours` <-
function(x) {
  length(endpoints(x,on='hours'))-1
}
`ndays` <-
function(x) {
  length(endpoints(x,on='days'))-1
}
`nweeks` <-
function(x) {
  length(endpoints(x,on='weeks'))-1
}
`nmonths` <-
function(x) {
  length(endpoints(x,on='months'))-1
}
`nquarters` <-
function(x) {
  length(endpoints(x,on='quarters'))-1
}
`nyears` <-
function(x) {
  length(endpoints(x,on='years'))-1
}