plot.spec {stats} | R Documentation |
Plotting Spectral Densities
Description
Plotting method for objects of class "spec"
. For multivariate
time series it plots the marginal spectra of the series or pairs plots
of the coherency and phase of the cross-spectra.
Usage
## S3 method for class 'spec':
plot(x, add = FALSE, ci = 0.95, log = c("yes", "dB", "no"),
xlab = "frequency", ylab = NULL, type = "l",
ci.col = "blue", ci.lty = 3,
main = NULL, sub = NULL,
plot.type = c("marginal", "coherency", "phase"),
...)
plot.spec.phase(x, ci = 0.95,
xlab = "frequency", ylab = "phase",
ylim = c(-pi, pi), type = "l",
main = NULL, ci.col = "blue", ci.lty = 3, ...)
plot.spec.coherency(x, ci = 0.95,
xlab = "frequency",
ylab = "squared coherency",
ylim = c(0, 1), type = "l",
main = NULL, ci.col = "blue", ci.lty = 3, ...)
Arguments
x |
an object of class "spec" . |
add |
logical. If TRUE , add to already existing plot.
Only valid for plot.type = "marginal" .
|
ci |
coverage probability for confidence interval. Plotting of
the confidence bar/limits is omitted unless ci is strictly
positive. |
log |
If "dB" , plot on log10 (decibel) scale (as S-PLUS),
otherwise use conventional log scale or linear scale. Logical
values are also accepted. The default is "yes" unless
options(ts.S.compat = TRUE) has been set, when it is
"dB" . Only valid for plot.type = "marginal" .
|
xlab |
the x label of the plot. |
ylab |
the y label of the plot. If missing a suitable label will
be constructed. |
type |
the type of plot to be drawn, defaults to lines. |
ci.col |
colour for plotting confidence bar or confidence
intervals for coherency and phase. |
ci.lty |
line type for confidence intervals for coherency and
phase. |
main |
overall title for the plot. If missing, a suitable title
is constructed. |
sub |
a sub title for the plot. Only used for plot.type =
"marginal" . If missing, a description of the smoothing is used. |
plot.type |
For multivariate time series, the type of plot
required. Only the first character is needed. |
ylim, ... |
Graphical parameters. |
See Also
spectrum
[Package
stats version 2.2.1
Index]