Dear Ben,
There is no R package, however you can use the program qhull available at:
http://www.geom.umn.edu/software/qhull/
Unfortunately this site seems to be down a lot of the time. An earlier
version of the program - which probably has all the functionality you need
is available at:
http://www.cs.sunysb.edu/~algorith/implement/qhull/implement.shtml
Assuming you can compile the software ok, you can then run it as a standard
command line application if you are in a unix environment. David Marquette
provided me with some R code to handle calling from R - it writes out a
temporary file containing the data matrix you want to find a hull for and
then calls qhull. Let me know if this would be of use to you. Best wishes,
Greg.
On 12/10/01 09:16, "Ben Stapley" <b.stapley at umist.ac.uk>
wrote:
> Does anyone know of a R package that will determine the convex hull of a
> high-dimensional dataset (say 4-10 dimensions). I know chull works for
> 2D data.
>
> I'm neophyte to R and convex hulls so please keep it simple.
> Many thanks
>
> Ben
__________________________________________________________________________
Greg Jefferis, Lab Address: Liqun Luo, Herrin 144
Neurosciences PhD Programme & e-mail: jefferis at
stanford.edu
Dept Biological Sciences, Lab: (650) 725 5809
Gilbert Biology Building, Fax: (650) 723 0589
371 Serra Mall,
Stanford, CA 94305-5020. Home: (650) 497 1135
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