Recently I am working on the classification and decision tree in R. I have two questions:
(1) what is the difference among several terms such as "classification tree", "decision tree" and "regression tree"?
(2) I have used the code to save my tree: post(c.tree1, file = "tree1.ps", title = "MOOC"), but I cannot open the .ps file. What is the right way or software to open it? What is the R code to save my tree in pdf file?
