cluster analysis: predefined clusters

On Fri, Nov 26, 2010 at 6:55 AM, Derik Burgert <derik2000 at yahoo.de> wrote:

Dear list,

running a hierachical cluster analysis I want to?define a number of
objects that?build a cluster already. In other words: I want to force
some of the cases to be in the same cluster from the start of the
algorithm.

Any hints? Thanks in advance!

The hclust function has an argument 'members' that should allow you to
do that. You will need to specify the dissimilarity matrix
accordingly.

Peter