R help - Apr 2011 - Package mice: Error in if (meth[j] != "") { : argument is of length zero

Dear R users,
I am using package mice and I am getting the error "
Error in if (meth[j] != "") { : argument is of length zero." I
have tried using several different versions of R (even the one that will be
coming out this month) to no avail. I am using RStudio as my interface with R.
Also note that I had run this a couple of days ago and it was working fine; I
can't, however, remember the version of R that I was using but it was either
R-2.11.1 or R-2.12.1. Please find below my code and error. Any thoughts or
ideas?

> library(mice)
# setting up the default settings for the imputation
ini <- mice(NewPrimal, 
            seed = 52275,
            method = "norm",
            maxit=0,
            pred = quickpred(NewPrimal, 
                   mincor = 0.25,
                   minpuc = 0.95, 
                   include = c("D1", "D2", "D3", 
                               "Qtr1", "Qtr2",
"Qtr3",
                               "Feb", "Mar",
"Apr", "May", "Jun", "Jul",
                               "Aug", "Sep",
"Oct", "Nov", "Dec"),
                   exclude = c("ActualWeekEndingDate",
"Date", "Year")),
                   print=FALSE)

Error in if (meth[j] != "") { : argument is of length zero

Thank you so very much!
Rita 

________________________________________

"If you think education is expensive, try ignorance"--Derek Bok



 		 	   		  
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On Fri, Apr 8, 2011 at 2:56 PM, Rita Carreira <ritacarreira at
hotmail.com> wrote:
>
> Dear R users,
> I am using package mice and I am getting the error "
> Error in if (meth[j] != "") { : argument is of length zero."
I have tried using several different versions of R (even the one that will be
coming out this month) to no avail. I am using RStudio as my interface with R.
Also note that I had run this a couple of days ago and it was working fine; I
can't, however, remember the version of R that I was using but it was either
R-2.11.1 or R-2.12.1. Please find below my code and error. Any thoughts or
ideas?
>
>
>> library(mice)
> # setting up the default settings for the imputation
> ini <- mice(NewPrimal,
Without NewPrimal, we cannot reproduce what you are seeing (this is
where small sample datasets are helpful).
> ? ? ? ? ? ?seed = 52275,
> ? ? ? ? ? ?method = "norm",
> ? ? ? ? ? ?maxit=0,
> ? ? ? ? ? ?pred = quickpred(NewPrimal,
> ? ? ? ? ? ? ? ? ? mincor = 0.25,
> ? ? ? ? ? ? ? ? ? minpuc = 0.95,
> ? ? ? ? ? ? ? ? ? include = c("D1", "D2",
"D3",
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? "Qtr1", "Qtr2",
"Qtr3",
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? "Feb", "Mar",
"Apr", "May", "Jun", "Jul",
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? "Aug", "Sep",
"Oct", "Nov", "Dec"),
> ? ? ? ? ? ? ? ? ? exclude = c("ActualWeekEndingDate",
"Date", "Year")),
> ? ? ? ? ? ? ? ? ? print=FALSE)
>
> Error in if (meth[j] != "") { : argument is of length zero
You can get more details right after the error by typing:

traceback()

a quick grep of the mice code suggests the error forcing an exit may
occur around line 155.  You might be able to do something like:

fix(mice)

and then add a browser() call in somewhere before line 155 and then
poke around to get a better sense of what is going on.

Cheers,

Josh
>
> Thank you so very much!
> Rita
>
> ________________________________________
>
> "If you think education is expensive, try ignorance"--Derek Bok
>
>
>
>
> ? ? ? ?[[alternative HTML version deleted]]
>
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>


-- 
Joshua Wiley
Ph.D. Student, Health Psychology
University of California, Los Angeles
http://www.joshuawiley.com/