plot-QuantileSD {quantspec}

Plot the values of the QuantileSD.

Description

Creates a K x K plot depicting a quantile spectral density. 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 spectral density (red line),

• the means of the quantile periodograms used in the simulation (black line),

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

Usage

## S4 method for signature 'QuantileSD,ANY'
plot(
  x,
  ratio = 3/2,
  widthlab = lcm(1),
  xlab = expression(omega/2 * pi),
  ylab = NULL,
  frequencies = 2 * pi * (1:(floor(x@N/2)))/x@N,
  levels = getLevels(x, 1)
)

Arguments

x

The QuantileSD to plot

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).

frequencies

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

levels

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

Details

Currently, only the plot for the first component is shown.

Value

Plots the simulated quantile spectral density for all frequencies and levels specified.