R help - Aug 2008 - warning message while using "mice" Multivariate Imputation by Chained Equations

Hi there,

I am a beginner with R. Anyone could help to explain me what the following
warning msg means?

Warning messages:
1: In any(predictorMatrix[j, ]) :
  coercing argument of type 'double' to logical

Got 6 of it...although further calculations were done. Because of this
warning I am not sure if they are reliable since have no idea what exactly
the warning is about. Could anyone please help with the explanation?

I used "mice" Multivariate Imputation by Chained Equations (belonging
to
mice package) - the default version - predictive mean matching

imp<-mice(file)

By using the command "mice" it is instead of using default version
(which I
was using in this case and got the warning msg) possible to create your own
function which tells how the imputation data should be created. I would like
to create that function saying that Bayes bootstrap of the known data should
be imputed for those missing data. Any idea how that could be done??

Ana

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