is.tseries {pastecs} | R Documentation

## 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)

### Arguments

`x` | an object

### Value

a boolean value

### Author(s)

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

[Package pastecs version 1.3-4 Index]