I don't know of one. If building your own you could use rpart with the "maxdepth=1" as the tool to find the best split at each node. Terry Therneau On 12/20/2012 05:00 AM, r-help-request at r-project.org wrote:> Hi, > > I've searched R-help and haven't found an answer. I have a set of data from which I can create a classification tree using > rpart. However, what I'd like to do is predefine the blank structure of the binary tree (i.e., which nodes to include) and then use a package like rpart to fit for the optimal splitting criteria at each of the predefined nodes. > > Does such a package exist? > > Thanks, > Lee >