Yes, that seems like a sensible idea to me. Terry Therneau On Sat, 2011-12-03 at 12:00 +0100, r-help-request at r-project.org wrote:> The problem: There are no a priori groupings to run a classification > on > > My solution: > > This is a non-R code question, so I appreciate any thoughts. I have > used pam in the cluster package proceeded by sillohouette to find the > optimum number of clusters on scaled and centered data. I have > followed > this by a classification tree analysis with rpart to discern which > variables drive the clustering on the original data. Is this a > sensible > approach? > many thanks, > > Stephen Sefick >