[R] cutree using a vector for h giving meaningless results
Friedrich.Leisch@ci.tuwien.ac.at
Friedrich.Leisch at ci.tuwien.ac.at
Wed Jan 23 14:08:00 CET 2002
>>>>> On Tue, 22 Jan 2002 18:00:22 +0100,
>>>>> Beatrice Kulli Honauer (BKH) wrote:
> I try to use the routine cutree to cut a tree (created by hclust) into
> several groups by specifiing the hight of the cut.
> a<-1:10
> cutree(tree, h=a*100)
> The Matrix with group meberships returned is ok for most of the hights, but
> in some cases (as for example h=800 and h=900) the results don't make sense
> (group membership=0 or 58965231, it looks like the range of data allowed by
> the data type was too small). It's interesting that h=1000 gives proper
> results again. When I run the same for only one value of h (for example
> 800), the results are ok again. I did not use hights higher than the
> maximum hight of the tree!
could you give a complete reproducible example, i.e., code to create a
tree where you observe the problem? "in some cases" is a
little bit hard to debug ...
best,
--
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Friedrich Leisch
Institut für Statistik Tel: (+43 1) 58801 10715
Technische Universität Wien Fax: (+43 1) 58801 10798
Wiedner Hauptstraße 8-10/1071 Friedrich.Leisch at ci.tuwien.ac.at
A-1040 Wien, Austria http://www.ci.tuwien.ac.at/~leisch
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