[BioC] rcor.test

[Naomi Altman]

I still don't understand what you are trying to do.  Do you mean that 
you have k variables of length n in 1 group, and m variables also of 
length k in another and you want to compute all the correlations 
between variables in the 2 groups?

--Naomi

At 05:27 PM 2/2/2007, Damion Colin Nero wrote:
>What I am looking for is to pair one observation with all others as
>computing all possible pairwise correlations is computationally
>unfeasible using R with very large datasets
>
>Damion Nero
>Plant Molecular Biology Lab
>Department of Biology
>New York University
>
>
>----- Original Message -----
>From: Naomi Altman <naomi at stat.psu.edu>
>Date: Friday, February 2, 2007 3:31 pm
>Subject: Re: [BioC] rcor.test
>
> > To me, correlation measures the linear association between paired
> > observations.  Since the pairing is essential, how could the
> > datasets
> > not be the same length?
> >
> > --Naomi
> >
> > At 10:12 AM 1/31/2007, Damion Colin Nero wrote:
> > >I am using the rcor.test function available in the ltm package and
> > >wanted to know if there was a way to use this function to compute the
> > >correlation of two datasets that are not of equal length (similar
> > to the
> > >base cor function).  I was thinking an apply function like by
> > might work
> > >but so far I have had no luck getting it to work.I was wondering if
> > >anyone could give me some general advice on this.
> > >
> > >Damion Nero
> > >Plant Molecular Biology Lab
> > >Department of Biology
> > >New York University
> > >
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> >
> > Naomi S. Altman                                814-865-3791 (voice)
> > Associate Professor
> > Dept. of Statistics                              814-863-7114 (fax)
> > Penn State University                         814-865-1348
> > (Statistics)University Park, PA 16802-2111
> >
> >

Naomi S. Altman                                814-865-3791 (voice)
Associate Professor
Dept. of Statistics                              814-863-7114 (fax)
Penn State University                         814-865-1348 (Statistics)
University Park, PA 16802-2111