As in plot.rpart(,uniform=TRUE)
, each level has constant depth.
Specifying nodeinfo=TRUE
, shows the deviance explained or the
classification rate at each node.
A split is shown, for numerical variables, as
variable <> value
when the cases with lower values go left, or as
variable >< value
when the cases with lower values go right.
When the splitting variable is a factor, and print.levels=TRUE,
the split is shown as levels = factor = levels
with the cases
on the left having factor levels equal to those on the left of the
factor name, and correspondingly for the right.