R help - Nov 2009 - R help with princomp and pam clustering

Hi all!
I am working with R package cluster and I have a little problem: 
let's say I have two datasets...first one ("A") is divided into 4
clusters
by means of Pam algorythm.
Let's say I want to project the second database ("B") onto the
Comp.1 X
Comp.2 graph, and see where its elements are placed.
The two datasets are made of different dim (54x19 and 28x19). I tried to
extract the $loadings of the A clustering but I can't seem to figure out how
to use them with B :(
Using princomp I menaged to extract the $scores and plot the graph. Wouldn't
using princomp on the B dataset generate different PC? 
Thank you all!
Bye!!

Claudio
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On Thu, Nov 26, 2009 at 1:04 AM, Tyler82 <procaccianti.claudio at
gmail.com> wrote:
>
> Hi all!
> I am working with R package cluster and I have a little problem:
> let's say I have two datasets...first one ("A") is divided
into 4 clusters
> by means of Pam algorythm.
> Let's say I want to project the second database ("B") onto
the Comp.1 X
> Comp.2 graph, and see where its elements are placed.
> The two datasets are made of different dim (54x19 and 28x19). I tried to
> extract the $loadings of the A clustering but I can't seem to figure
out how
> to use them with B :(
Prin <- princomp(A)
predict(Prin,B)

in the assumption that the variable names in both dataframes are equal.
> Using princomp I menaged to extract the $scores and plot the graph.
Wouldn't
> using princomp on the B dataset generate different PC?
Indeed, it would.
> Thank you all!
> Bye!!
>
> Claudio
> --
> View this message in context:
http://old.nabble.com/R-help-with-princomp-and-pam-clustering-tp26522485p26522485.html
> Sent from the R help mailing list archive at Nabble.com.
>
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