[gov2001-l] Problem with Imputation

Sheldon: I couldn't seem to get mice running on my mac and kept getting weird errors. I was working with Elena and, rather than investigate, we tried the same code on a PC and it worked fine. Before you devote too much time to debugging your code, you might just see if the same lines work with the Windows version of R (assuming that's an easy test). To be clear, our problem may have had nothing to do with being on a mac but I thought I'd pass along our experience. Omar On May 5, 2006, at 1:49 PM, Sheldon Bond wrote: When trying to impute a binary variable using mice, I encounter this error message in the first iteration, iter imp variable 1 1 Approval.member Approval.Congress Trust.Index Efficacy.Index Efficacy.Index2 CompetenceError in x[good, ] * w : non-numeric argument to binary operator My data table has the following dimension 15502 by 30. Competence is a binary numeric variable with about 150 NA's. In my imp.method vector, I have specified "logreg" as the method of imputation. Does anyone have any suggestions as to what this error could mean. Regards, Sheldon _______________________________________________ gov2001-l mailing list gov2001-l(a)lists.fas.harvard.edu http://lists.fas.harvard.edu/mailman/listinfo/gov2001-l Omar Wasow M.A.-Ph.D. Candidate Department of African and African American Studies Department of Government Harvard University