[R] Shafer's MI software for S-plus

Prof Brian Ripley ripley at stats.ox.ac.uk
Tue Apr 1 16:43:55 CEST 2003

I have an R port of MIX, but it is not 100% reliable. However, neither is
the S-PLUS original!  (We have found several bugs already.)

When I have a few spare days (if ever?) I will try again.  We got enough
to work for the project we needed it for.  Meanwhile,


has the current state.

Brian Ripley

On Tue, 1 Apr 2003 Ted.Harding at nessie.mcc.ac.uk wrote:

> Greetings folks,
> Shafer's S-plus package "norm" for multiple imputation of
> missing values in multivariate normal data has been most
> kindly and usefully ported to R by Alvaro A. Novo.
> Shafer's website
>   http://www.stat.psu.edu/~jls/
> lists four S-plus packages in all:
>   NORM - multiple imputation of multivariate continuous data
>   CAT - multiple imputation of multivariate categorical data
>   MIX - multiple imputation of mixed continuous and categorical data
>   PAN - multiple imputation of multivariate panel or clustered data
> I am particularly interested at the moment in the functionality
> of "MIX", and am (naively) prepared to try my hand at getting it
> into R, but I am wondering generally if this or any of the others
> ("CAT", "PAN") have been tried in R by anyone.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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