causalTree
get model frame of causalTree, same as rpart
# S3 method for causalTree
model.frame(formula, ...)
a model frame for causalTree
.
a formula, with a response but no interaction terms. If this is a data frame, it is taken as the model frame (see model.frame).
arguments to rpart.control
may also be
specified in the call to causalTree
. They are checked against the
list of valid arguments. An example of a commonly set parameter would
be xval
, which sets the number of cross-validation samples.
The parameter minsize
is implemented differently in
causalTree
than in rpart
; we require a minimum of minsize
treated observations and a minimum of minsize
control
observations in each leaf.