[R] hierarhical cluster analysis of groups of vectors

Anders Malmendal anders at chem.au.dk
Tue May 29 13:51:52 CEST 2007

The vectors are produced by PLS-discriminant analysis between groups and 
the vectors within a group are simply different measurements of the same 
thing. What I need is a measure of how the different groups cluster. (I 
assume that I can do some averaging after applying dist, but I can not  
find the information on how to do it.)
Best regards

Rafael Duarte wrote:
> It seems that you have already groups defined.
> Discriminant analysis would probably be more appropriate for what you 
> want.
> Best regards,
> Rafael Duarte
> Anders Malmendal wrote:
>> I want to do hierarchical cluster analysis to compare 10 groups of 
>> vectors with five vectors in each group (i.e. I want to make a 
>> dendogram showing the clustering of the different groups). I've 
>> looked into using dist and hclust, but cannot see how to compare the 
>> different groups instead of the individual vectors. I am thankful for 
>> any help.
>> Anders
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Anders Malmendal, mailto:anders at chem.au.dk
Center for Insoluble Protein Structures (inSPIN)
and Interdisciplinary Nanoscience Center (iNANO),
Department of Chemistry, University of Aarhus,
Langelandsgade 140, DK-8000 Aarhus C, Denmark.
tel: +45 8942 3866 fax: +45 8619 6199

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