## S3 method for class 'irts'
lines(x, type = "l", ...)
## 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", ...)
## S3 method for class 'irts'
print(x, format = "%Y-%m-%d %H:%M:%S", tz = "GMT",
usetz = TRUE, format.value = NULL, ...)
## S3 method for class 'irts'
time(x, ...)
## S3 method for class 'irts'
value(x, ...)
## S3 method for class 'irts'
x[i, j, ...]
Arguments
x
an object of class "irts"; usually, a result
of a call to irts.
type, plot.type, xlab, ylab, main, ylim, oma
graphical
arguments, see plot, points,
lines, par, and plot.ts.
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 argument
format to the function formatC.
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 to lines; for plot passed
to plot, plot.default, and
mtext; for points passed to
points; for print passed to
formatC; for time, value, and
[.irts unused.
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. For value a vector or matrix representing
the sequence of values.
For [.irts an object of class "irts" representing the
extracted part.
For plot, points, lines, and print the
irregular time-series object.
Author(s)
A. Trapletti
See Also
irts,
irts-functions
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)