[R] Question about rpart and regression trees
Paul Smith
phhs80 at gmail.com
Mon Jan 22 23:26:00 CET 2007
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
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