plot-QuantilePG: Plot the values of the `QuantilePG`.

Description

Creates a K x K plot depicting a quantile periodogram. Optionally, a simulated copula spectral density can be displayed. In each of the subplots either the real part (on and below the diagonal; i. e., $\tau_1 \leq \tau_2$) or the imaginary parts (above the diagonal; i. e., $\tau_1 > \tau_2$) of

the quantile periodogram (black line),
a simulated quantile spectral density (red line),

for the combination of levels $\tau_1$ and $\tau_2$ denoted on the left and bottom margin of the plot are displayed.

Usage

## S3 method for class 'QuantilePG,ANY':
plot(x, qsd, ratio = 3/2, widthlab = lcm(1),
  xlab = expression(omega/2 * pi), ylab = NULL,
  type.scaling = c("individual", "real-imaginary", "all"),
  frequencies = x@frequencies[-which(x@frequencies == 0)],
  levels = intersect(x@levels[[1]], x@levels[[2]]))

Arguments

The QuantilePG object to plot

qsd

a QuantileSD object; will be plotted if not missing.

ratio

quotient of width over height of the subplots; use this parameter to produce landscape or portrait shaped plots.

widthlab

width for the labels (left and bottom); default is lcm(1), cf. layout.

xlab

label that will be shown on the bottom of the plots; can be an expression (for formulas), characters or NULL to force omission (to save space).

ylab

label that will be shown on the left side of the plots; can be an expression (for formulas), characters or NULL to force omission (to save space).

type.scaling

a method for scaling of the subplots; currently there are three options: "individual" will scale each of the K^2 subplots to minimum and maximum of the values in that plot, "real-imaginary" will scale eac

frequencies

a set of frequencies for which the values are to be plotted; default is all available frequencies but 0; if 0 is the only available frequency, then only 0 will be used.

levels

a set of levels for which the values are to be plotted.

Value

Returns the plot described in the Description section.