\HeaderA{hft}{hft}{hft}
\keyword{manip}{hft}
\begin{Description}\relax
Performs the Haar-Fisz transform.
\end{Description}
\begin{Usage}
\begin{verbatim}
hft(data)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{data}] The vector of Poisson counts, its length must be a power of 2
\end{ldescription}
\end{Arguments}
\begin{Value}
Returns:
\begin{ldescription}
\item[\code{hfy}] The Haar-Fisz transform of code{data} (vector of the same length as \code{data}).
\end{ldescription}
\end{Value}
\begin{Author}\relax
Piotr Fryzlewicz
\end{Author}

