R help - Feb 2003 - Type of multi-valued variable

Hi,

I've read in the past a thead in the R discussion list
about the multi-valued type variable (what was called checklist).
At the moment Gregory had intention to add some general code
in his gregmisc package.

I'm wondering if there's some general code / packages available ?

A general class for taking account this type of variable 
would be very useful in the domain of survey processings,
as multi-responses questions are often used. 
The simple operations applied to these variables are holecount, 
cross tabulations with others variables, transformation to single 
coded variables like number of responses, etc.

Thanks in advance for any help
--
Fan

On Mon, 10 Feb 2003 21:51:50 +0100
Fan <xiao.gang.fan1 at libertysurf.fr> wrote:
> Hi,
> 
> I've read in the past a thead in the R discussion list
> about the multi-valued type variable (what was called checklist).
> At the moment Gregory had intention to add some general code
> in his gregmisc package.
> 
> I'm wondering if there's some general code / packages available ?
> 
> A general class for taking account this type of variable 
> would be very useful in the domain of survey processings,
> as multi-responses questions are often used. 
> The simple operations applied to these variables are holecount, 
> cross tabulations with others variables, transformation to single 
> coded variables like number of responses, etc.
> 
> Thanks in advance for any help
> --
> Fan
> 
Fan, Take a look at p. 38-44 of
http://hesweb1.med.virginia.edu/biostat/s/doc/summary.pdf where examples of the
mChoice (multiple choice) function in Hmisc are given.

-- 
Frank E Harrell Jr              Prof. of Biostatistics & Statistics
Div. of Biostatistics & Epidem. Dept. of Health Evaluation Sciences
U. Virginia School of Medicine  http://hesweb1.med.virginia.edu/biostat