[R] RPart

[dstierman]

I am using the rpart package and seem to have trouble with data sets that
have columns with no data. I look at the column data in R and all values are
NA. When this occurs, I get nothing back from the rpart function. Is there a
way to get the rpart package to ignore these columns, without knowing what
columns are empty? I have tried the na.action=na.omit and
na.action=na.exclude, but neither one fixes the problem.
Thanks, Don
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