
Hi all, 

Having a matrix A formed by n vectors as columns. Is there anything to calculate a determined function to all combination of vectors?

For example imagine A matrix is compose by vectors a, b and c. And the function to perform is correlation, so I would like to obtain cor(a, b), cor(a, c) and cor(b, c).

I we had numbers instead of vector, the function is outer, but I am not able to apply it to vectors... 

Thanks a lot.

P.



> Date: Mon, 9 Feb 2009 08:37:06 -0800
> From: zznmeb@gmail.com
> To: r-help@r-project.org
> Subject: Re: [R] installing R on Ubuntu
> 
> On Mon, Feb 9, 2009 at 4:51 AM, Neil Shephard <nshephard@gmail.com> wrote:
> >
> > The preceived "difficulty" of installing R under whatever flavour of
> > GNU/Linux in this thread stems from being unfamiliar with the process of the
> > package management of the flavour of GNU/Linux you use (and in part by the
> > various distros not having the most recent version of R in their
> > repositories.
> >
> > People who say "why can't it be as easy as dowloading a self-installing
> > binary and running that" are trying to fit a round peg (their experience and
> > understanding of how applications install in M$-windows) in a square hole
> > (or triangular, hexagonal, or whatever depending on the distribution of
> > GNU/Linux).
> 
> This is true. However, for the most common Linux distros --Debian, Red
> Hat Enterprise / CentOS / Scientific Linux / Fedora, openSUSE and
> Ubuntu -- you can install the most recent R compiled for your distro
> from
> 
> http://<your-nearest-CRAN-mirror>/bin/linux/
> 
> In addition, most of the distros have third-party repositories where
> you can find the latest version of R. In short, if you have an x86 or
> x86_64/amd64 system running almost any Linux, you can find a
> pre-compiled R. R is a popular package, and it's pretty easy to find
> even for Power PC or some of the obscure architectures.
> 
> >
> > There are pro's and con's to each of the GNU/Linux flavours and its really a
> > matter of deciding which you like/have invested time in learning.
> >
> > Irrespective its still simple to install R from source under GNU/Linux...
> >
> > 1) Download source tar-ball
> > 2) Extract and cd to the directory
> > 3) ./configure --prefix=/where/you/want/R/to/go (optionally setting the
> > install path at this stage)
> > 4) ./make
> > 5) ./make install
> >
> > ...all documented in the FAQ at
> > http://cran.r-project.org/doc/FAQ/R-FAQ.html#How-can-R-be-installed-_0028Unix_0029
> 
> Many Linux distros do *not* install the development tools by default,
> and which ones live in which packages varies by distro. Fedora in
> particular is extremely stripped when you install from the LiveCD. You
> have to install gcc, make and a couple of other things just to install
> VMware Tools, for example, when running Fedora as a VMware guest. For
> building R from source and installing R packages, you'll also need to
> install gfortran. And many libraries with external dependencies, like
> Rgraphviz, will require not only the package itself (graphviz) but
> also the C headers, which may have the name "graphviz-devel" on some
> distros and some other name on other distros.
> >
> > This might not be as clean as using the native package management, but does
> > mean that you'll have the latest version installed.
> >
> > Neil
> >
> > (Addendum - I've tried several different distros, starting with RedHat 7.3,
> > then various versions of Slackware 8 through to 9 before settling on Gentoo,
> > all were easy to install R in).
> 
> I just recently switched from Gentoo to openSUSE. Gentoo usually had
> the latest R source in their repository within a day or so of it
> coming out of the R Project release cycle. To get it, all you needed
> to do was put the package name in the "/etc/portage/package-keywords"
> file. And Gentoo, since it is almost all compiled from source, by
> nature *does* have all the development tools installed and installs
> all the headers when it installs packages.
> 
> -- 
> M. Edward (Ed) Borasky
> 
> I've never met a happy clam. In fact, most of them were pretty steamed.
> 
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