\HeaderA{accessD.wst}{Get mother wavelet coefficients from a packet ordered non-decimated wavelet object (wst).}{accessD.wst}
\keyword{manip}{accessD.wst}
\begin{Description}\relax
The mother wavelet coefficients from a packet ordered non-decimated wavelet object, \code{\LinkA{wst}{wst}}, are stored in a matrix. This function extracts all the coefficients corresponding to a particular resolution level.
\end{Description}
\begin{Usage}
\begin{verbatim}
accessD.wst(wst, level, aspect = "Identity", ...)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{wst}] Packet ordered non-decimated wavelet object from which you wish to extract the mother wavelet coefficients.
\item[\code{level}] The level that you wish to extract. This can range from zero (the coarsest coefficients) to nlevels(wstobj) which returns the original data. 
\item[\code{aspect}] 
\item[\code{...}] 
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
The \code{\LinkA{wst}{wst}} function performs a packet-ordered non-decimated wavelet transform. This function extracts all the mother wavelet coefficients at a particular resolution level specified by \code{level}.

Note that coefficients returned by this function are in \emph{packet order}. They can be used \emph{as is} but for many applications it might be more useful to deal with the coefficients in packets: see the function \code{\LinkA{getpacket.wst}{getpacket.wst}} for further details. 

Note that all the coefficients here are those of mother wavelets. The non-decimated transform efficiently computes all possible shifts of the discrete wavelet transform computed by \code{\LinkA{wd}{wd}}.
\end{Details}
\begin{Value}
A vector of the extracted coefficients.
\end{Value}
\begin{References}\relax
Nason, G.P. and Silverman, B.W. The stationary wavelet transform and some statistical applications.
\end{References}
\begin{SeeAlso}\relax
\code{\LinkA{wst}{wst}}, \code{\LinkA{wst.object}{wst.object}}, \code{\LinkA{accessD}{accessD}}, \code{\LinkA{getpacket.wst}{getpacket.wst}}
\end{SeeAlso}
\begin{Examples}
\begin{ExampleCode}
#
# Get the 4th level of mother wavelet coefficients from a decomposition
#
#accessD(wst(data), level=4)
\end{ExampleCode}
\end{Examples}

