help with PCA

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
project.org] On Behalf Of David Winsemius
Sent: Saturday, March 16, 2013 1:33 PM
To: john d
Cc: r-help at r-project.org
Subject: Re: [R] help with PCA


On Mar 16, 2013, at 8:49 AM, john d wrote:

Dear all,

If I do a PCA like this:

dat<-matrix(rnorm(30),ncol=3)
res<-prcomp(dat)

Now, imagine that I got new data that I want to project onto the
original PC axes. How do I do that?

You can either read the help page or for worked examples do a search on
markmail:

list:org.r-project.r-help prcomp project new data onto components


--
David Winsemius
Alameda, CA, USA