Dear All I would like to use rpart to obtain a regression tree for a dataset like the following:
Y X1 X2 X3 X4 5.500033 B A 3 2 0.35625148 D B 6 5 0.8062546 E C 4 3 5.100014 C A 3 2 5.7000422 A A 3 2 0.76875436 C A 6 5 1.0312537 D A 4 1 Y is the objective variable. X1, X2, X3 and X4 can take, respectively, the following values: X1: A,B,C,D,E X2: A,B,C,D,E X3: 3,4,5,6 X4. 1,2,3,4,5 Should I convert X3 and X4 to factor before running rpart? Thanks in advance, Paul ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
