You are absolutely right. I read the guidelines! Mistake to attach 'word'
file! The comfort is that at least  I got an "A" :).
I revise my question approapriately!

On Wed, Oct 24, 2012 at 10:36 AM, David Winsemius <dwinsemius@comcast.net>wrote:

>
> On Oct 23, 2012, at 11:36 PM, Loukia Spineli wrote:
>
> > Dear all,
> >
> > I am trying to create a list, where each list element is a vector of
> > different length arrays that contain 2by2 matrices. To be more specific
> > there are 11 treatments that are compared with placebo (we have 11
> > comparisons) and each comparison is studied by a different number of
> trials
> > and each trial has a different number of missing participants in both
> arms.
> > The length of the list is equal to the number of comparisons. In each
> > comparison the number of arrays is equal to the number of trials that
> study
> > this comparison. For instance 4 trials compare PAR with placebo. So, for
> > this comparison we have 4 arrays and each array has a length equal to the
> > producy of the number of participants in each arm. These arrays contain
> 2x2
> > matrices.
> >
> > I have attached a document with the data and the code.
>
> Well, "A" for effort but somewhat lower grade for not reading the Posting
> Guide and attaching a MIME-text file.
>
> > I cannot create the
> > list results the way I have described above. It creates only the
>  matrices
> > for the first array (that has length equal to 135) of the first
> comparison
> > leaving the rest 10 comparisons "NULL".
> > Any suggestion would be  really helpful
> >
> > Thank you in advance,
> > Loukia
> > ______________________________________________
> > R-help@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.
>
> David Winsemius, MD
> Alameda, CA, USA
>
>

	[[alternative HTML version deleted]]


