Thanks, I got to do it.,
2008/11/6 Pedro Mardones <mardones.p_at_gmail.com>
> try prcomp instead of princomp
> On Thu, Nov 6, 2008 at 3:20 PM, Lucke, Joseph F
> <Joseph.F.Lucke_at_uth.tmc.edu> wrote:
> > Neola
> > I'm a bit rusty on this, but I believe you can conduct on singular-value
> decomposition on the 436 by 518 matrix. The squares of your singular values
> (max of 436, 518-436 will be zero) will be your eigenvalues, the same as in
> the PC analysis. The post-eigenvectors will be your components. As I have
> said, my knowledge is not completely trustworthy at this point, but SVD
> would be worth looking into.
> > Joe
> > -----Original Message-----
> > From: r-help-bounces_at_r-project.org [mailto:r-help-bounces_at_r-project.org]
> On Behalf Of Noela Sánchez
> > Sent: Thursday, November 06, 2008 1:10 PM
> > To: stephen sefick
> > Cc: r-help_at_r-project.org
> > Subject: Re: [R] PCA
> > My matrix have 436 registers and 518 variables. I need to do a PCA
> > Usually I use princomp command to perform PCA analyst, but this time i
> can't because of my variables are more than my registers.
> > 2008/11/6 stephen sefick <ssefick_at_gmail.com>
> >> would you please provide a dummy example that explains your problem.
> >> Then maybe I can help you.
> >> thanks
> >> Stephen
> >> On Thu, Nov 6, 2008 at 1:42 PM, Noela Sánchez <noesanchez_at_udc.es>
> >> > I need perform PCA analyst with a matrix with more variables than
> >> >
> >> > The princomp command don't match with this matrix.
> >> >
> >> > Anybody knows a good command to do it?
> >> >
> >> > --
> >> > Noela
> >> >
> >> > [[alternative HTML version deleted]]
> >> >
> >> > ______________________________________________
> >> > R-help_at_r-project.org mailing list
> >> > https://stat.ethz.ch/mailman/listinfo/r-help
> >> > PLEASE do read the posting guide
> >> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> >> osting-guide.html>
> >> > and provide commented, minimal, self-contained, reproducible code.
> >> >
> >> --
> >> Stephen Sefick
> >> Research Scientist
> >> Southeastern Natural Sciences Academy
> >> Let's not spend our time and resources thinking about things that are
> >> so little or so large that all they really do for us is puff us up and
> >> make us feel like gods. We are mammals, and have not exhausted the
> >> annoying little problems of being mammals.
> >> -K.
> >> Mullis
> > --
> > Noela
> > Grupo de Recursos Marinos y Pesquerías
> > Universidad de A Coruña
> > [[alternative HTML version deleted]]
> > ______________________________________________
> > R-help_at_r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> > and provide commented, minimal, self-contained, reproducible code.
-- Noela Grupo de Recursos Marinos y Pesquerías Universidad de A Coruña [[alternative HTML version deleted]]Received on Thu 06 Nov 2008 - 23:06:54 GMT
______________________________________________ R-help_at_r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
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