[BioC] 'gpls' package, principle component loadings

[Ignatius Pang]

Hi Robert,

Thank you for your prompt reply. I had a closer look at the function and
documentations on partial least squares. Would you please help me update the
' glpls1a' function in the 'gpls' package, so that it returns the internal
variable capital 'P'? This will give me the loadings matrix, which is
similar in concept to the principle components in principle component
analyses. Thank you in advance.

Best Regards,

Ignatius

-----Original Message-----
From: Robert Gentleman [mailto:rgentlem at gmail.com] 
Sent: Tuesday, August 02, 2011 11:45 PM
To: Ignatius Pang
Cc: bioconductor at stat.math.ethz.ch
Subject: Re: [BioC] 'gpls' package, principle component loadings

Hi Ignatius,

On Tue, Aug 2, 2011 at 2:21 AM, Ignatius Pang <ignatius.pang at gmail.com>
wrote:
> Hi,
>
>
>
> I am using the 'gpls' package, and would like to obtain the loadings 
> for the 1st and 2nd principle components. It will be useful to update 
> the package in

  I don't believe that those components are referred to as principle
components, loadings or something like that is, I believe, the more common
term.

> such a way so that it can provide these loadings, for the function 
> 'glpls1a'. Would someone please help me update the package? I 
> suggesting a simple change to the function, so that it returns the 
> internal variable 'W', which is likely to contain the loadings. Would 
> someone please let me know if it is correct? Thank you in advance.

   I don't know if it is correct - you can look at W when running the
function (use R's function debug) and once you are sure you know what you
would like to have returned I would be happy to modify the package.

  best wishes
    Robert
>
>
>
> Regards,
>
>
>
> Ignatius
>
>
>
>
>
> Ignatius Pang
>
> PhD, Biotechnology, UNSW
>
> NSW Systems Biology Initiative
> University of New South Wales, Sydney, NSW, Australia, 2052
>
> i.pang at unsw.edu.au | www.systemsbiology.org.au 
> <http://www.systemsbiology.org.au/>
>
>
>
>
>
>
>
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>
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--
Robert Gentleman
rgentlem at gmail.com