hi, I am trying to grow a classification tree on some data, but I have a little problem. In order to do so I have to use a function like "tree" in R and on the internet help(tree) I get the following:
"The left-hand-side (response) should be either a numerical vector when a regression tree will be fitted or a factor, when a classification tree is produced" I would like to know what is a "factor" in R, is it numerical value with no formula or just a word?? Thanks in advance Nicolas ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
