[R] tree problem

This is a repeat posting from 28 Oct that generated no replies. I'm hoping someone has some advice since I'm still stuck ... I am trying to use tree to partition a data set. The data set has 3924 observations. Partitioning works for small subsets of the data, but when I use the entire data set,

[R] tree problem

I am trying to use tree to partition a data set. The data set has 3924 observations. Partitioning seems to work for small subsets of the data, but when I use the entire data set, no partitioning occurs. The variables are: RESPrespondent to a survey (0 = not a respondent, 1 = respondent)