[R] Hmisc multiple imputation functions

[Frank E Harrell Jr]

On Mon, 16 Jun 2003 13:22:08 +0000
Vumani Dlamini <dvumani at hotmail.com> wrote:

> Dear all;
> 
> I am trying to use HMISC imputation function to perform multiple imputations 
> on my data and I keep on getting errors for the code given in the help 
> files.

You did not specify the version of Hmisc nor the output of the version command to provide the OS and version of R.

> 
> When using "aregImpute" the error is;
> 
> >f <- aregImpute(~y + x1 + x2 + x3, n.impute=100)
> Loading required package: acepack
> Iteration:1 Error in .Fortran("wclosepw", as.double(w), as.double(x), 
> as.double(runif(lw)),  :
>         C/Fortran function name not in load table

Please see above.  If you are running under Windows, perhaps the wclosepw routine was omitted from the Windows distribution of Hmisc.

> 
> When I use "transcan" it is;
> 
> >f  <- transcan(~y + x1 + x2, n.impute=10, shrink=FALSE)
> Error in transcan(~y + x1 + x2, n.impute = 10, shrink = FALSE) :
>         Must specify data= when using R

That is an error in the documentation which I just fixed.  Add

 d <- data.frame(y,x1,x2)
 f <- transcan(~y+x1+x2, ......., data=d)

Frank

> 
> I am not sure what I am missing.
> 
> Vumani
> 
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---
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