Re: [R] clustering method

From: Sean Davis <sdavis2_at_mail.nih.gov>
Date: Fri 30 Dec 2005 - 22:22:58 EST

On 12/30/05 5:27 AM, "vagua1@mailbox.gr" <vagua1@mailbox.gr> wrote:

> Hello r-helpers
>
> I have a correlation matrix (either pearson or spearman) of 41 variables and i
> want to use it to construct a tree with agnes command (instead of using the
> distances). My problem is that at the height of the tree i see negative
> scaling also which is not desired. Is there any r-command that uses as a
> distance method the correlation estimates instead of distances
> (distances=dissimilarities, correlations=simmilarities) so that the height of
> the tree will be between 0 (zero) and 1 (one). Or simply, is there a way to
> transform the correlations in a proper way and to use the agnes command for
> example so that the height of the tree will be between 0 and 1?Thank you very
> much.

1-correlation?

Sean



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Fri Dec 30 22:31:21 2005

This archive was generated by hypermail 2.1.8 : Sat 31 Dec 2005 - 02:48:52 EST