%%
%% for use in psd_overview.
%%
\begin{table}[htbp!]
\begin{centering}

\caption{A comparison of power spectral density estimators in R,
excluding extensions which only estimate raw-periodograms.
Normalizations are shown as either ``single" or ``double" for
either single- or double-sided spectra, and ``various"
if there are multiple, optional normalizations. A $(*)$ denotes
the default for a function having an option for 
either single or double.
}

\begin{tabular}{r l c c c l}
\hline
\SC{Function} & \SC{Namespace} & \SC{Sine m.t.?} & \SC{Adaptive?} & \SC{Norm.} & \SC{Reference} \\
\hline
\Rcmd{bspec}     & \Rcmd{bspec}     & \SCN{} & \SCN{} & single$^*$ & \citet{rover2011} \\
\Rcmd{mtapspec}  & \Rcmd{RSEIS}     & \SCY{} & \SCN{} & various & \citet{lees1995} \\
\Rcmd{pspectrum} & \psd{}           & \SCY{} & \SCY{} & single  & \citet{barbour2014,psdR} \\
\Rcmd{spectrum}  & \Rcmd{stats}     & \SCN{} & \SCN{} & double  & \citet{rcore} \\
\Rcmd{spec.mtm}  & \Rcmd{multitaper}& \SCY{} & \SCY{} & double & \citet{rahim2014} \\
\Rcmd{SDF}       & \Rcmd{sapa}      & \SCY{} & \SCN{} & single$^*$ & \citet{percival1993} \\
\hline
\end{tabular}
\label{tbl:methods}
\end{centering}
\end{table}
