irts-methods
From tseries v0.10-1
by Kurt Hornik
Methods for Irregular Time-Series Objects
Methods for irregular time-series objects.
- Keywords
- ts
Usage
## S3 method for class 'irts':
lines(x, type = "l", \dots)
## S3 method for class 'irts':
plot(x, type = "l", plot.type = c("multiple", "single"),
xlab = "Time", ylab = NULL, main = NULL, ylim = NULL,
oma = c(6, 0, 5, 0), ...)
## S3 method for class 'irts':
points(x, type = "p", \dots)
## S3 method for class 'irts':
print(x, format = "\%Y-\%m-\%d \%H:\%M:\%S", tz = "GMT",
usetz = TRUE, format.value = NULL, \dots)
## S3 method for class 'irts':
time(x, \dots)
## S3 method for class 'irts':
value(x, \dots)
## S3 method for class 'irts':
[(x, i, j, \dots)
Arguments
- x
- an object of class
"irts"
; usually, a result of a call toirts
. - type, plot.type, xlab, ylab, main, ylim, oma
- graphical
arguments, see
plot
,points
,lines
,par
, and - format, tz, usetz
- formatting related arguments, see
format.POSIXct
. - format.value
- a string which specifies the formatting of the
values when printing an irregular time-series
object.
format.value
is passed unchanged as argumentformat
to the functionformatC
- i, j
- indices specifying the parts to extract from an irregular time-series object.
- ...
- further arguments passed to or from other methods: for
lines
passed tolines
; forplot
passed toplot
,
Details
plot
is the method for plotting irregular time-series objects.
points
and lines
are the methods for drawing a sequence
of points as given by an irregular time-series object and joining the
corresponding points with line segments, respectively.
print
is the method for printing irregular time-series objects.
time
and value
are the methods for extracting the
sequence of times and the sequence of values of an irregular
time-series object.
[.irts
is the method for extracting parts of irregular
time-series objects.
Value
- For
time
an object of class"POSIXct"
representing the sequence of times. Forvalue
a vector or matrix representing the sequence of values.For
[.irts
an object of class"irts"
representing the extracted part. Forplot
,points
,lines
, andprint
the irregular time-series object.
See Also
Examples
n <- 10
t <- cumsum(rexp(n, rate = 0.1))
v <- rnorm(n)
x <- irts(t, v)
x
time(x)
value(x)
plot(x)
points(x)
t <- cumsum(c(t[1], rexp(n-1, rate = 0.2)))
v <- rnorm(n, sd = 0.1)
x <- irts(t, v)
lines(x, col = "red")
points(x, col = "red")
# Multivariate
t <- cumsum(rexp(n, rate = 0.1))
u <- rnorm(n)
v <- rnorm(n)
x <- irts(t, cbind(u, v))
x
x[,1]
x[1:3,]
x[1:3,1]
plot(x)
Community examples
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