Is this object a time series?

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)

is.tseries(x)

Arguments

x

an object

Value

a boolean value

Author

Philippe Grosjean (phgrosjean@sciviews.org), Frédéric Ibanez (ibanez@obs-vlfr.fr)

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
#> [1] TRUE
not.a.ts <- c(1,2,3)
is.tseries(not.a.ts)  # FALSE
#> [1] FALSE