\Header{pltree.twins}{Clustering Tree of a Hierarchical Clustering}
\keyword{cluster}{pltree.twins}
\keyword{hplot}{pltree.twins}
\begin{Description}\relax
Draws a clustering tree (dendrogramm) of a \code{twins} object, i.e.,
hierarchical clustering, typically resulting from \code{agnes} or
\code{diana}.
\end{Description}
\begin{Usage}
\begin{verbatim}
## S3 method for class 'twins':
pltree(x, main = paste("Dendrogram of ", deparse(x$call)),
             labels = NULL, ylab = "Height", ...)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{x}] an object of class \code{"twins"}, typically created by either
\code{\Link{agnes}()} or \code{\Link{diana}()}.
\item[\code{main}] main title with a sensible default.
\item[\code{labels}] labels to use; the default is constructed from \code{x}.
\item[\code{ylab}] label for y-axis.
\item[\code{...}] Graphical parameters (see \code{\Link{par}}) may also
be supplied as arguments to this function.
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
Creates a plot of a clustering tree given a \code{twins} object.  The
leaves of the tree are the original observations.  In case of an
agglomerative clustering, two branches come together at the distance
between the two clusters being merged.  For a divisive clustering, a
branch splits up at the diameter of the cluster being splitted.
\end{Details}
\begin{Value}
a NULL value is returned.
\end{Value}
\begin{SeeAlso}\relax
\code{\Link{agnes}}, \code{\Link{agnes.object}}, \code{\Link{diana}},
\code{\Link{diana.object}}, \code{\Link{hclust}}, \code{\Link{par}},
\code{\Link{plot.agnes}}, \code{\Link{plot.diana}}.
\end{SeeAlso}
\begin{Examples}
\begin{ExampleCode}
\end{ExampleCode}
\end{Examples}

