[R] cluster analysis under contiguity constraints with R ?

[Gavin Simpson]

On Fri, 2007-02-16 at 13:10 +0100, Bellanger Lise wrote:
> Hello,
>  
>     I would like to know if there is a function in an R library that 
> allows to do cluster analysis under contiguity constraints ?
>  
> 
>     Thank you very much for your answer !
> 
>     Lise Bellanger

Lise, 

One option might be some non-CRAN code from Steve Juggins. He has a
modified hclust (see ?hclust for details on this) that is designed to
work with samples that are ordered in some way. The type-use example
that Steve wrote it for is clustering samples in a lake sediment core,
where the samples are strictly ordered in time (depth) and you can only
fuse adjacent samples/groups.

If this is the sort of thing you meant, try:

http://www.campus.ncl.ac.uk/staff/Stephen.Juggins/analysis.htm

The function is chclust() in his in-development palaeo package.

G

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