Thank you so much, it helped a lot!!

Cheers!

Thibault

On Tue, Apr 12, 2011 at 3:31 PM, G. Jay Kerns [via R] <
ml-node+3445833-834565539-229789@n4.nabble.com> wrote:

> Dear Thibault,
>
> On Tue, Apr 12, 2011 at 5:06 PM, Thibault Grava
> <[hidden email]<http://user/SendEmail.jtp?type=node&node=3445833&i=0&by-user=t>>
> wrote:
>
> > Hello Jay,
> >
> > I know that an old post but I really need to calculate KMO for my data
> and
> > this is the only thread I found on the subject.
> >
> > I'm a very newby to R so sorry for the odd questions.
> >
> > It looks like in your reply that you use "kmo" as a function and you
> apply
> > it to your data "D"... I tried that on my data but it says "Error:
> couldn't
> > find function "kmo"". I installed and loaded the package "corpcor" but it
>
> > still doesn't work... did I get it wrong?
> >
> > Also i would like to use the complete function (see
> > http://tolstoy.newcastle.edu.au/R/help/05/12/17235.html), but I don't
> really
> > understand how to use it... where should I enter the data directory??
> >
> > I thank you a lot for your help.
> >
> > Thibault
> >
>
>
> Please forgive me, but I'm not sure I really understand what your
> question is.  My advice would be to go here:
>
> https://stat.ethz.ch/pipermail/r-help/2007-August/138049.html
>
> and copy-paste the function listed there - it looks like
>
> kmo = function( data ){
>
> ...bunch of stuff here...
>
> } # end of kmo()
>
> into an R session, for instance, on the Windows RGui.  If you like,
> you can test that everything works with the example shown right below
> that (just copy-paste, again).  You don't need any corpcor package,
> all you need is MASS which should have shipped with the R you are
> using.
>
> You also don't need a data directory.  What you need is a matrix
> (called "X" in my message) with the data stored in the correct
> order/positions.  See the Trujillo-Ortiz et al. discussion (linked in
> my message) for lots more detail about what the matrix means and how
> to set it up.  If you are having trouble setting up a data matrix in
> general then I recommend the R documentation which you can find under
> the Help menu.
>
> I just double-checked and both the function and example still work
> like a charm, almost 4 years later. (?!)
>
> Good luck, and I hope this helps.
> Jay
>
>
> ______________________________
> G. Jay Kerns, Ph.D.
> Youngstown State University
> http://people.ysu.edu/~gkerns/
>
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