Try this 

newData = data.frame(f1 = factor(c("a","a","b","b")), f2 = factor(c("b", "a","b","a")))
 
And use that newData in your predict statement

On Oct 14, 2011, at 4:09 PM, Manuel Spínola <mspinola10@gmail.com> wrote:

> newData = data.frame(f1 = factor(c("a", "b")), f2 = factor(c("b", "a")))

	[[alternative HTML version deleted]]

