**Software**

**Generalized single linkage clustering (GSL)**

GSL is a method for nonparametric clustering described in the following article:

W. Stuetzle and R. Nugent **
A generalized single linkage method for estimating the cluster tree of a
density.
**Journal of Computational and Graphical Statistics, 2009 (to appear)

The online supplement has all the Latex source, R code, and data to generate
the paper, as well as an R package *gslclust* implementing GSL. In case you
don't want to bother with unpacking, here is a link to
gslclust*.*

To try gslclust* *on a PC, download the package. Then open a
Command Prompt window, cd to the directory holding the package, and
install the package by issuing the DOS command "R CMD install gslclust". You can
find R code illustrating the use of gslclust
here.