pastecs (version 1.4.2)

is.tseries: Is this object a time series?

Description

This is equivalent to is.rts() in Splus and to is.ts() in R. is.tseries() recognizes both 'rts' and 'ts' objects whatever the environment (Splus or R)

Usage

is.tseries(x)

Value

a boolean value

Arguments

x

an object

Author

Philippe Grosjean (), Frédéric Ibanez ()

See Also

tseries

Examples

tser <- ts(sin((1:100)/6*pi)+rnorm(100, sd=0.5), start=c(1998, 4), frequency=12)
is.tseries(tser)      # TRUE
not.a.ts <- c(1,2,3)
is.tseries(not.a.ts)  # FALSE