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\description{
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\description{
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Plotting method for objects of class \code{"spec"}. For multivariate
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Plotting method for objects of class \code{"spec"}. For multivariate
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time series it plots the marginal spectra of the series or pairs plots
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time series it plots the marginal spectra of the series or pairs plots
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of the coherency and phase of the cross-spectra.
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of the coherency and phase of the cross-spectra.
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}
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}
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\synopsis{
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plot.spec(x, add = FALSE, ci = 0.95, log = c("yes", "dB", "no"),
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xlab = "frequency", ylab = NULL, type = "l",
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ci.col = "blue", main = NULL, sub = NULL,
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plot.type = c("marginal", "coherency", "phase"), \dots)
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plot.spec.phase(x, ci = 0.95, xlab = "frequency",
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ylab = "phase", ylim = c(-pi, pi), type = "l",
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main = NULL, ci.lty = 3, ci.col = "blue", \dots)
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plot.spec.coherency(x, ci = 0.95, xlab = "frequency",
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ylab = "squared coherency", ylim = c(0, 1), type = "l",
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main = NULL, ci.lty = 3, ci.col = "blue", \dots)
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}
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\usage{
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\usage{
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\method{plot}{spec}(x, add = FALSE, ci = 0.95, log = c("yes", "dB", "no"),
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\method{plot}{spec}(x, add = FALSE, ci = 0.95, log = c("yes", "dB", "no"),
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xlab = "frequency", ylab, type = "l", ci.col = "blue",
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xlab = "frequency", ylab = NULL, type = "l",
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ci.col = "blue", ci.lty = 3,
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main = NULL, sub = NULL,
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main = NULL, sub = NULL,
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plot.type = c("marginal", "coherency", "phase"),
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plot.type = c("marginal", "coherency", "phase"),
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ci.lty = 3, \dots)
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\dots)
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plot.spec.phase(x, ci = 0.95,
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xlab = "frequency", ylab = "phase",
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ylim = c(-pi, pi), type = "l",
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main = NULL, ci.col = "blue", ci.lty = 3, \dots)
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plot.spec.coherency(x, ci = 0.95,
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xlab = "frequency",
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ylab = "squared coherency",
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ylim = c(0, 1), type = "l",
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main = NULL, ci.col = "blue", ci.lty = 3, \dots)
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}
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}
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\arguments{
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\arguments{
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\item{x}{an object of class \code{"spec"}.}
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\item{x}{an object of class \code{"spec"}.}
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\item{add}{logical. If \code{TRUE}, add to already existing plot.}
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\item{add}{logical. If \code{TRUE}, add to already existing plot.
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Only valid for \code{plot.type = "marginal"}.
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}
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\item{ci}{Coverage probability for confidence interval. Plotting of
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\item{ci}{coverage probability for confidence interval. Plotting of
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the confidence bar is omitted unless \code{ci} is strictly
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the confidence bar/limits is omitted unless \code{ci} is strictly
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positive.}
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positive.}
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\item{log}{If \code{"dB"}, plot on log10 (decibel) scale (as S-PLUS),
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\item{log}{If \code{"dB"}, plot on log10 (decibel) scale (as S-PLUS),
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otherwise use conventional log scale or linear scale. Logical
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otherwise use conventional log scale or linear scale. Logical
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values are also accepted. The default is \code{"yes"} unless
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values are also accepted. The default is \code{"yes"} unless
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\code{options(ts.S.compat = TRUE)} has been set, when it is
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\code{options(ts.S.compat = TRUE)} has been set, when it is
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\code{"dB"}.}
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\code{"dB"}. Only valid for \code{plot.type = "marginal"}.
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}
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\item{xlab}{the x label of the plot.}
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\item{xlab}{the x label of the plot.}
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\item{ylab}{the y label of the plot.}
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\item{ylab}{the y label of the plot. If missing a suitable label will
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be constructed.}
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\item{type}{the type of plot to be drawn, defaults to lines.}
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\item{type}{the type of plot to be drawn, defaults to lines.}
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\item{ci.col}{Colour for plotting confidence bar or confidence
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\item{ci.col}{colour for plotting confidence bar or confidence
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intervals for coherency and phase.}
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intervals for coherency and phase.}
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\item{main}{overall title for the plot.}
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\item{sub}{a sub title for the plot.}
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\item{plot.type}{For multivariate time series, the type of plot
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required. Only the first character is needed.}
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\item{ci.lty}{line type for confidence intervals for coherency and
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\item{ci.lty}{line type for confidence intervals for coherency and
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phase.}
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phase.}
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\item{main}{overall title for the plot. If missing, a suitable title
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is constructed.}
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\item{sub}{a sub title for the plot. Only used for \code{plot.type =
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"marginal"}. If missing, a description of the smoothing is used.}
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\item{plot.type}{For multivariate time series, the type of plot
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required. Only the first character is needed.}
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\item{\dots}{Further graphical parameters.}
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\item{ylim, \dots}{Graphical parameters.}
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}
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}
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\seealso{
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\seealso{
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\code{\link{spectrum}}
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\code{\link{spectrum}}
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}
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}
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\keyword{hplot}
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\keyword{hplot}
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