Plot an ACF Object

DESCRIPTION:

an xyplot of the autocorrelations versus the lags, with type = h , is produced. If alpha > 0, curves representing the critical limits for a two-sided test of level alpha for the autocorrelations are added to the plot.

USAGE:

plot(object, alpha, xlab, ylab, grid, ...) 

REQUIRED ARGUMENTS:

object
an object inheriting from class ACF, consisting of a data frame with two columns named lag and ACF, representing the autocorrelation values and the corresponding lags.

OPTIONAL ARGUMENTS:

alpha
an optional numeric value with the significance level for testing if the autocorrelations are zero. Lines corresponding to the lower and upper critical values for a test of level alpha are added to the plot. Default is 0, in which case no lines are plotted.
xlab,ylab
optional character strings with the x- and y-axis labels. Default respectively to "Lag" and "Autocorrelation".
grid
an optional logical value indicating whether a grid should be added to plot. Defaults to FALSE.
...
optional arguments passed to the xyplot function.

VALUE:

an xyplot Trellis plot.

SEE ALSO:

,

EXAMPLES:

fm1 <- lme(follicles ~ sin(2*pi*Time) + cos(2*pi*Time), Ovary) 
plot(ACF(fm1, maxLag = 10), alpha = 0.01)