hello,
i am encoutering problems with a function of R concerning the
classification trees.
In the library {tree}, when I use the function "tree" to grow a
classification tree it should give me an object of class "tree". Then
I
should be allowed to use this "tree" object in the function
"cv.tree"
that requires an object of class "tree" in order to run a
cross-validation experiment.
There is the problem, when I do this the following message appears:
"Error in as.data.frame.default(data) : can't coerce function into a
data.frame".
So instead of considering the object as an object of class tree the
function "cv.tree" handles it like a data.frame.
Does anyone knows why or how to work on a class "tree" object so that
"cv.tree" can handle it?
Thanks in advance...
Nicolas Deig