On May 4, 2010, at 2:13 PM, Marc Carpentier wrote:
Ok. I was afraid to refer to a known and obvious error.
Here is a testing dataset (pb1.csv) and commented code (pb1.R) with
the problems.
Thanks for any help.
Nothing attached. In all likelihood had you given these file names
with extensions of .txt, they would have made it through the server
filter
Marc
________________________________
De : Uwe Ligges <lig...@statistik.tu-dortmund.de>
À : Marc Carpentier <marc.carpent...@ymail.com>
Cc : r-help@r-project.org
Envoyé le : Mar 4 mai 2010, 13 h 52 min 31 s
Objet : Re: [R] aregImpute (Hmisc package) : error in matxv(X,
xcof)...
Having reproducible examples including data and the actual call that
lead to the error would be really helpful to be able to help.
Uwe Ligges
On 04.05.2010 12:23, Marc Carpentier wrote:
Dear r-help list,
I'm trying to use multiple imputation for my MSc thesis.
Having good exemples using the Hmisc package, I tried the
aregImpute function. But with my own dataset, I have the following
error :
Erreur dans matxv(X, xcof) : columns in a (51) must be<= length of
b (50)
De plus : Warning message:
In f$xcoef[, 1] * f$xcenter :
la taille d'un objet plus long n'est pas multiple de la taille
d'un objet plus court
= longer object length is not a multiple of shorter object length
I first tried to "I()" all the continuous variables but the same
error occurs with different numbers :
Erreur dans matxv(X, xcof) : columns in a (37) must be<= length of
b (36)...
I'm a student and I'm not familiar with possible constraints in a
dataset to be effectively imputed. I just found this previous
message, where the author's autoreply suggests that particular
distributions might be an explanation of algorithms failure :
http://www.mail-archive.com/r-help@r-project.org/msg53534.html
Does anyone know if these messages reflect a specific problem in my
dataset ? And if the number mentioned might give me a hint on which
column to look at (and maybe transform or ignore for the
imputation) ?
Thanks for any advice you might have.
Marc
David Winsemius, MD
West Hartford, CT
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