irts | R Documentation |
The function irts
is used to create irregular time-series
objects.
as.irts
coerces an object to an irregularly spaced
time-series. is.irts
tests whether an object is an irregularly
spaced time series.
irts(time, value)
as.irts(object)
is.irts(object)
time |
a numeric vector or a vector of class |
value |
a numeric vector or matrix representing the values of the irregular time-series object. |
object |
an R object to be coerced to an irregular time-series object or an R object to be tested whether it is an irregular time-series object. |
The function irts
is used to create irregular time-series
objects. These are scalar or vector valued time series indexed by a
time-stamp of class "POSIXct"
. Unlike objects of class
"ts"
, they can be used to represent irregularly spaced
time-series.
A list of class "irts"
with the following elements:
time |
a vector of class |
value |
a numeric vector or matrix. |
A. Trapletti
ts
,
POSIXct
,
irts-methods
,
irts-functions
n <- 10
t <- cumsum(rexp(n, rate = 0.1))
v <- rnorm(n)
x <- irts(t, v)
x
as.irts(cbind(t, v))
is.irts(x)
# Multivariate
u <- rnorm(n)
irts(t, cbind(u, v))
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