erer (version 4.0)

headts: Return the first or last part of time series data

Description

Return the first of last parts of an object of time series data.

Usage

headts(x, n = 5, ...)
  tailts(x, n = 5, ...)

Value

An object like x but generally smaller.

Arguments

x

input time seires data.

n

a single integer for the length or row of returned data

...

additional arguments to be passed.

Author

Changyou Sun ()

Details

The data can be an univariate or multivariate time series data.

Examples

h1 <- ts(data=cbind(1:24), start=c(2001, 1), frequency=12)
h2 <- ts(data=cbind(1:24, 25:48), start=c(2001, 1), frequency=12)
h3 <- ts(data=cbind(1:4, 5:8, 9:12), start=c(2001, 1), frequency=4)
colnames(h2) <- c("aa", "bb")
colnames(h3) <- c("cc", "dd", "ee")
h1; h2; h3

h1; headts(h1); tailts(h1, 28)
h2; headts(h2); tailts(h2, 50)
h3; headts(h3, 2); tailts(h3); tailts(h3, 8)

data(daBed); headts(daBed); tailts(daBed)