[EMAIL PROTECTED] wrote:
>
>
>
> Hi,
>
> Is there a function under R that does principal component analysis and
then
> use the selected eignevectors to filter the data and transform back to the
> original coordinates?
> If there isn't, can someone guide as to how to do this approach.
>
> Much appreciated.
>
You have such a function in the pastecs library. It is called decevf(), for
"decomposition with eigenvector filtering (EVF), which is a synonyme for PCA
filtering. Once you have installed pastecs package, issue:
> library(pastecs)
> ?decevf
> example(decevf)
as a starting point.
Best,
Philippe Grosjean
.......................................................<?}))><....
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( ( ( ( ( Prof. Philippe Grosjean
\ ___ )
\/ECO\ ( Numerical Ecology of Aquatic Systems
/\___/ ) Mons-Hainaut University, Pentagone
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/NUM\/ )
\___/\ ( phone: + 32.65.37.34.97, fax: + 32.65.37.33.12
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